Memory Alpha
Memory Alpha
({{featured}} -- HOWEVER, it still could use a wiki markup....)
(during the Battle of Xahea, at 14:17, you can see two phaser beams coming from below the shuttlebay)
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<table class="wiki-sidebar">
 
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{{Sidebar starship class
<tr><td colspan="2" style="text-align: center">[[Image:Enterprise_orig.jpg|200px]]</td></tr>
 
  +
|name = ''Constitution''-class
<tr><td class="even" colspan="2" style="text-align: left !important"><center>Original Configuration</center></td></tr>
 
  +
|dt = ''Constitution'' class
<tr><td class="odd">Type:</td><td class="even">[[Heavy Cruiser]]</td></tr>
 
  +
|tab1 = 2245-54
<tr><td class="odd">Length:</td><td class="even">289 meters</td></tr>
 
  +
|tab2 = 2256-58
<tr><td class="odd">Beam:</td><td class="even">132 meters</td></tr>
 
  +
|tab3 = 2260s
<tr><td class="odd">Draft:</td><td class="even">73 meters</td></tr>
 
  +
|tab4 = 2270s-
<tr><td class="odd">Mass:</td><td class="even">190,000 metric tons</td></tr>
 
  +
|t1image = USS Enterprise, 2254 (remastered).jpg
<tr><td class="odd">Crew:</td><td class="even">430 (43 officers, 387 enlisted)</td></tr>
 
  +
|t2image = USS Enterprise in Spacedock.jpg
<tr><td class="odd">Maximum Speed:</td><td class="even">Warp 8 (Cochrane scale)</td></tr>
 
  +
|t3image = USS Enterprise initial CGI model by CBS Digital.jpg
<tr><td class="odd">Armament:</td><td class="even">2 to 6 phaser emitters, 2 to 6 photon torpedo launchers</td></tr>
 
  +
|t4image = Refit Constitution class forward.jpg
<tr><td class="odd">Defenses:</td><td class="even">Deflector shields</td></tr>
 
  +
|t1caption = The USS Enterprise in 2254
<tr><td colspan="2" style="text-align: center">[[Image:Enterprise11.jpg|200px]]</td></tr>
 
  +
|t2caption = The USS Enterprise in 2258
<tr><td class="even" colspan="2" style="text-align: left !important"><center>Refit Configuration</center></td></tr>
 
  +
|t3caption = The USS Enterprise in 2267
<tr><td class="odd">Type:</td><td class="even">Heavy Cruiser</td></tr>
 
  +
|t4caption = The USS Enterprise-A, a Constitution-class post 2270s refit
<tr><td class="odd">Length:</td><td class="even">305 meters</td></tr>
 
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|owner = {{Federation}}
<tr><td class="odd">Beam:</td><td class="even">141 meters</td></tr>
 
  +
|t1owner = {{Federation}}<br/>[[Terran Empire]]
<tr><td class="odd">Draft:</td><td class="even">71 meters</td></tr>
 
  +
|operator = Federation [[Starfleet]]
<tr><td class="odd">Mass:</td><td class="even">200,000 metric tons (est)</td></tr>
 
  +
|t1operator = Federation [[Starfleet]]<br />Imperial {{mu|Starfleet}}
<tr><td class="odd">Crew:</td><td class="even">500 (72 officers, 428 enlisted)</td></tr>
 
  +
|type = {{class|Starship}}<br />[[heavy cruiser|Class I Heavy Cruiser]]
<tr><td class="odd">Armament:</td><td class="even">6 phaser emitters (dual mounts), 6 phaser emitters (single mounts), 2 photon torpedo launchers</td></tr>
 
  +
|t4type = [[Heavy cruiser]]
<tr><td class="odd">Defenses:</td><td class="even">Deflector shields</td></tr>
 
  +
|t1active = [[2240s]]&ndash;[[2260s]]
</table>
 
  +
|t2active = [[2250s]]
The '''''Constitution'' class [[starship]]s''' were the premiere front-line [[Starfleet]] vessels in the latter half of the 23rd century. They were designed for long duration missions with minimal outside support. They are best known for their celebrated missions of galactic exploration and diplomacy which typically lasted up to five years.
 
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|t3active = [[2260s]]&ndash;[[2270s]]
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|t4active = [[2270s]]&ndash;[[24th century]]
  +
|length = 288.6 [[meter]]s
  +
|t4length = 305 meters
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|beam = 127.1 meters
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|t4beam = &nbsp;
  +
|height = 72.6 meters
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|t4height = &nbsp;
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|mass = Nearly 1,000,000 [[gross ton]]s
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|t2mass = 190,000 [[Gross ton]]s
  +
|decks = 22
  +
|t4decks = 23
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|t1crew = 203 {{small|(2250s)}}<br />430 {{small|(2260s)<sup>[[#footnote 1|1]]</sup>}}
  +
|t2crew = 203 to 430
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|t3crew = 430
  +
|t4crew = 432 {{small|(2270s)}}<br />300 {{small|(2290s)}}<ref name="TUC">{{film|6}}</ref>
  +
|t1speed = [[Warp factor|Warp 2]] {{small|([[cruising speed]])}}<br />[[Warp factor|Warp 6]] {{small|(maximum safe speed)}}<br />[[Warp factor|Warp 8]] {{small|(maximum speed)}}<br />[[Warp factor|Warp 9]] {{small|(attainable at extreme risk)}}
  +
|t2speed = [[Warp factor|Warp 6]] {{small|([[cruising speed]])}}<br />Warp 8 {{small|(maximum speed)}}
  +
|t3speed = [[Warp factor|Warp 2]] {{small|([[cruising speed]])}}<br />[[Warp factor|Warp 6]] {{small|(maximum safe speed)}}<br />[[Warp factor|Warp 8]] {{small|(maximum speed)}}<br />[[Warp factor|Warp 9]] {{small|(attainable at extreme risk)}}<br />[[Warp factor|Warp 11]] {{small|(attainable with [[Kelvan]] engine modifications)}}<br />[[Warp factor|Warp 14.1]] {{small|(attainable for a few minutes with engine overload)}}
  +
|t4speed = [[Warp factor|Warp 8]] {{small|(max. [[cruise speed]])}}<br />[[warp factor|Warp 9]] {{small|(emergency speed)}} {{incite}}
  +
|t1armament = [[Phaser bank]]s<br />2 fore [[torpedo launcher]]s<br />2 aft [[torpedo launcher]]s
  +
|t2armament = 8 [[Phaser emitter]]s<br /> 2 [[Torpedo launcher]]s
  +
|t3armament = [[Phaser bank]]s<br />6 fore [[torpedo launcher]]s<br />1 aft [[torpedo launcher]]
  +
|t4armament = 18 [[phaser bank]]s<br />2 fore [[torpedo launcher]]s
  +
|defenses = [[Deflector shield]]s
  +
|t4defenses = Deflector shields<br />[[defense field|Defense field]]s
  +
|t1image2 = USS Enterprise profile view, 2254-R.jpg
  +
|t1caption2 = The USS Enterprise in 2254
  +
|t2image2 = USS Enterprise port side, 2258.jpg
  +
|t2caption2 = The USS Enterprise in 2257
  +
|t3image2 = USS Enterprise, 2270.jpg
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|t3caption2 = The USS Enterprise in 2270
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|t4image2 = USS Enterprise NCC-1701 dorsal.jpg
  +
|t4caption2 = A dorsal view of the refit USS Enterprise in 2285
  +
}}
   
  +
{{alt disambiguation||''Constitution''-class (alternate reality)}}
==History==
 
  +
The '''''Constitution''-class''' was a [[Federation]] {{class|Starship}}, [[Heavy cruiser|Class I Heavy Cruiser]]. They were the premier frontline [[Starfleet]] [[starship|vessels]] in the latter half of the [[23rd century]]<sup>[[#footnote 2|2]]</sup>.
The ''Constitution'' class [[starship]]s were launched in [[2245]] ''([[Star Trek Encyclopedia]])'', and served as [[Starfleet]]'s front-line vessel for the rest of the century. The ''Constitution'' class starships also served as a mighty deterrent to both the [[Klingon Empire|Klingon]] and [[Romulan Star Empire|Romulan Empire]]s, several times taking part in combat actions which determined the fate of the entire [[Federation]] if not the [[Alpha Quadrant]] itself.
 
   
  +
They were designed for long duration missions with minimal outside support and were best known for their celebrated missions of galactic exploration and [[diplomacy]], and were capable of operating on [[five-year mission]] cycles.
The ship was probably refurbished some time between 2254, when there were 203 people aboard, ''([[TOS]]: "[[The Cage]]")'' and 2266, when the Constitution class had a crew complement of over 400 ''([[TOS]]: "[[Charlie X]]")''.
 
   
===USS ''Enterprise''===
+
== History ==
  +
=== 2240s-2260s ===
The most famous ''Constitution'' class starship was the [[USS Enterprise (NCC-1701)|USS Enterprise]], launched under the command of Captain [[Robert April]] in [[2245]]. The Enterprise gained its reputation during its five year mission ([[2265]]-[[2270]]) under the command of Captain [[James T. Kirk]]. ''([[VOY]]: "[[Q2 (episode)|Q2]]")''
 
  +
During the mid-23rd century, at least twelve ''Constitution''-class starships were commissioned by Starfleet.<sup>[[#footnote 3|3]]</sup> Construction of the starships occurred at [[Earth]]'s [[San Francisco Navy Yards]], and [[Luna]]'s [[Tranquility Base]] by [[2245]]. ({{TOS|Tomorrow is Yesterday}}; {{TAS|The Counter-Clock Incident}}; {{ENT|In a Mirror, Darkly}}; {{DIS|Brother}})
   
  +
One of the class' [[designer]]s was [[Lawrence Marvick]], whose work included designing the controls for [[engineering]]. ({{TOS|Is There in Truth No Beauty?}}) [[Doctor]] [[Richard Daystrom]] was responsible for the basic design of the [[computer]]s used aboard this class. ({{TOS|The Ultimate Computer}})
===Refit Configuration===
 
In the late [[2260]]s, the ''Constitution'' class starships underwent a major refit program. The actual refitting took eighteen months of work and essentially a new vessel was built onto the bones of the old, replacing virtually every major system. Thus the ''Constitution'' class starships continued in service for a further twenty years.
 
[[Image:Wrath of khan enterprise.jpg|thumb|left|182px|Refit configuration ''Enterprise''.]]
 
Essential upgrades were made to the ''Constitution'' class' warp systems; the old cylindrical [[nacelle]]s were replaced with new angular ones, and also the warp nacelle strust were new, as they were connected to the engineering hull much closer to the neck than before. The [[engineering hull]] roughly retained its original shape - while the original hull was essentially a conical cylinder, the refit was much more rounded. As for the interior of the hull, the most obvious upgrades were the englargment of the shuttle deck and landing bay, as well as the addition of an horizontal [[Matter-antimatter reaction assembly|matter-anitmatter reaction assembly]] and a vertical intermix chamber.
 
   
  +
Future {{USS|Enterprise|NCC-1701}} {{dis|captain|rank}}, [[Robert April]], was present when the ship's unit components were built. ({{TAS|The Counter-Clock Incident}})
New also was the installment of the double [[photon torpedo]] launcher with its rectangular housing in the neck of the vessel. Furthermore, the [[saucer section]] was considerably extended with almost 20 metres, while the rest of the surface remained about the same. Major changes were made to the interior of the ''Constitution'' class starship, however; many new systems were added and existing onces upgraded. Summerizing, only the internal structure of the saucer and very few of the engineering hull and neck may have survived the [[2271]]-upgrade.
 
   
  +
[[File:USS Discovery rendezvousing with USS Enterprise.jpg|thumb|''Enterprise'' rendezvous with the ''Discovery'', 2257.]]
==Technical Data==
 
  +
During the {{dis|Federation-Klingon War|2256-57}}, ''Constitution''-class ships were kept off the front lines, as a unit of last resort.<sup>[[#footnote 4|4]]</sup> At the time, the {{USS|Defiant|NCC-1764}} was assigned to patrol [[Sector 006]], while the {{USS|Enterprise|NCC-1701}} was ordered to continue its then five-year mission under {{Captain}} [[Christopher Pike]]. This order took a toll on their crews. ({{DIS|Despite Yourself|Brother}}) The mission parameters for the class meant that its vessels usually operated widely dispersed on their own and that encounters with class sisters were few and far between. {{incite}} The year [[2267]], however, saw a gathering of the class when a large group was assembled at [[Starbase 11]] for refitting and repairs. ({{TOS|Court Martial}})
<table class="wiki-sidebar">
 
<tr><td colspan="2" align="center">[[Image:Constitution class original saucer.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Original configuration saucer module.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Constitution class refit engineeringhull.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration engineering hull.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Constitution class refit warpjump.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration warp jump.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Constitution class refit impulsedrive.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration impulse drive.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Constitution class refit torpedo.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration torpedo bay.</td></tr>
 
</table>
 
===Physical arrangement===
 
The ''Constitution'' class starships were one of the first to feature the saucer-engineering hull design, which would later become recognizable for most other [[Starfleet]] vessels. The hulls were capable of [[saucer separation]] in case of emergency; the crew would than evacuate to the saucer module, while personnel unable to escape in time could abandon the engineering hull through way of escape pod. ''([[TOS]]: "[[The Apple]]")''
 
   
  +
Aboard the ''Enterprise'' at least, new colorful [[Starfleet uniform (late 2230s-2250s)#Type B|Starfleet uniforms]] were adopted before some other ships. They were seen in use shortly after the Federation-Klingon War. ({{DIS|Brother}})
===Command and control systems===
 
  +
[[File:Nhan, Pike, and Connolly beam aboard.jpg|thumb|left|Operations, Command, and Sciences uniforms introduced on select starships in 2257]]
The computer system aboard the ''Constitution'' class starship was [[duotronic]] based. ''([[TOS]]: "[[The Ultimate Computer]]")''
 
  +
Despite the successes of the class, exemplified by the performance of the ''Enterprise'', under Captain [[James T. Kirk]], the mission parameters for the ''Constitution''-class also meant that the vessels of the class operated under highly dangerous circumstances, resulting in a relatively high loss rate, and that being assigned to one was hazardous at best. {{incite|This statement seems like original research, using the following paragraphs.}}
   
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In 2267 for example, the USS ''Constellation'' under the command of [[Commodore]] [[Matt Decker]] fell victim to what has become known as the "[[doomsday machine]]", when it was on a routine survey mission near system [[L-374]], and both the ship and crew were lost. ({{TOS|The Doomsday Machine}}) Likewise, and less than a year later in [[2268]], the [[Vulcan]] manned USS ''Intrepid'' was lost with its entire crew, in a fatal encounter with a huge [[space amoeba|simple cellular being]] in [[star system]] [[Gamma 7A system|Gamma 7A]] of [[Sector 39J]]. ({{TOS|The Immunity Syndrome}}) Later that year, the USS ''Exeter'' became infected with an unknown virus, a residue from [[Biological weapon|biological warfare]] which had raged on [[Omega IV]] and which the ship was orbiting, again killing her entire crew, save for its captain, [[Ronald Tracey]]. While undamaged, the contaminated ship was for the time being left adrift. ({{TOS|The Omega Glory}})
===Propulsion systems===
 
Until [[2260]], the ''Constitution'' class was furnished with a [[lithium]]-controlled [[Matter-antimatter reaction assembly]], while a [[dilithium]]-controlled MARA was installed that year. The vessel's starndard cruising speed was [[Warp]] 6 (216c), while its maximum cruising speed was Warp 8 (512c). Maximum warp speed was reached by the [[USS Enterprise (NCC-1701)|USS ''Enterprise'']] at Warp 14.1 (2803c) due to sabotage to the vessel's [[warp drive]] system. ''([[TOS]]: "[[That Which Survives]]")''
 
   
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In late-[[2268]], the starships ''Excalibur'', ''Hood'', ''Lexington'', and ''Potemkin'' all took part in the disastrous testing of the [[M-5 multitronic unit]], which had been placed in control of the ''Enterprise''. The ''Excalibur'' was severely damaged, with all hands lost. The ''Lexington'' also was brutally assaulted by the M-5 computer when the unit became unstable. ({{TOS|The Ultimate Computer}})
Following the [[2271]] refit of the class, the ''Constitition'' was equipped with a linear dilithium-controlled MARA, and a pulse dilithium-controlled assembly was installed in [[2285]] aboard the USS ''Enterprise''. ''([[Star Trek: The Motion Picture]])''
 
   
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Later that year, the ''Defiant'' responded to a distress call from an unexplored sector of space, claimed by the [[Tholian Assembly]]. Shortly upon entering the region, the ''Defiant'' crew began experiencing sensory distortion, and insanity quickly spread throughout the ship. The ship's surgeon was unable to determine what was happening, and eventually, the insanity induced by the phenomenon led the crew to kill each other.
The ''Constitution'' class' [[impulse drive]] system was a twin-port fusion reactor engine, capable of 0.25c.
 
   
  +
[[File:USS Defiant in Tholian drydock, 2155.jpg|thumb|left|The ''Defiant'' in a Tholian drydock facility]]
===Tactical systems===
 
  +
Three weeks later, Starfleet ordered the ''Enterprise'' to mount a search mission to locate the ''Defiant''. On stardate 5693.2, the ''Enterprise'' located her adrift, lost between universes in a space warp. As a result of a later [[phaser]] exchange between the ''Enterprise'' and two {{dis|Tholian ship|23rd century}}s, a hole was created through the [[spatial interphase]], pushing the ''Defiant'' into the [[mirror universe]]. ({{TOS|The Tholian Web}})
Originally, the ''Constitution'' class starships were equipped with four capacitor-driven medium-power lasers. After 2260, the vessel had two [[phaser]] banks and three [[photon torpedo]] launchers (furnished with approximately one hundred torpedos) at its disposal. ''([[TOS]]: "[[The Cage]]")''
 
   
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''The ''Defiant'' emerged in the [[22nd century]] [[mirror universe]], where the Tholians of that universe had created the interphase rift by detonating a [[tricobalt]] warhead within the [[gravity well]] of a dead [[star]]. The ''Defiant'' was initially captured by the Tholians, but later taken over by the [[Terran Empire]] with control of the ship finally passing to {{mu|Hoshi Sato}}.'' ({{ENT|In a Mirror, Darkly|In a Mirror, Darkly, Part II}})
==Interior Design==
 
<table class="wiki-sidebar">
 
<tr><td colspan="2" align="center">[[Image:Constitution Original Bridge.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Original configuration bridge.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Constitution class refit bridge 1.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration bridge.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Constitution class refit bridge 2.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration bridge.</td></tr>
 
<tr><td colspan="2" align="center">[[Image:TUC bridge.jpg|200px]]</td></tr>
 
<tr><td class="even" colspan="2" style="text-align: center">Refit configuration bridge (2293).</td></tr>
 
</table>
 
===Main Bridge===
 
Deck 1 was primarily composed of the vessel's [[Main Bridge]], and it was from here that the [[commanding officer]] supervised the entire starship's operation. When seated in the command chair, located in the sunken centre section, the commander had visual access to all major personnel station and view screens, facilitating the decision-making process. This room was the nerve centre of the ''Constitution'' class starship, and was manned by the top officers of each department.
 
   
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''In 2267, the {{ISS|Enterprise|NCC-1701}} was a ''Constitution''-class starship of the Imperial {{mu|Starfleet}} identical in configuration to the prime ''Enterprise''.'' ({{TOS|Mirror, Mirror}})
Navigation and vessel course control were carried out at the [[Helm|helm console]], located in the centre of the room. Directly above this station, affixed to the ceiling, was the navigational sensor input system. This device transmitted by laser all input from the ship's main navigational sensor array, and tied directly into the astrogator console beneath it.
 
   
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{{bginfo|It is unclear what happened to the ''Defiant'' following Sato's bid to become [[Terran emperor|empress]]. The ship appeared in a modified configuration on a display graphic in {{DIS|Despite Yourself}}, which [[Ted Sullivan]] confirmed to be modifications made by the Terran Empire, {{twitter|karterhol/status/952202679618453504}} though it was not stated whether the ''Defiant'' still existed. Regardless, the Empire appears to have used the original ''Constitution''-class overall configuration for over one-hundred years without any apparent changes.}}
Other stations were provided for communications, engineering, weapons control, gravity control, damage control, environmental engineering, sciences and library computer, and internal security. All stations were normally manned at all times.
 
   
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=== 2270s-2360s ===
Mounted into the room's forward bulkhead, on the ship's centreline, was the [[viewscreen|main viewscreen]]. Visual sensor pickups located at various points on the ''Constitution'' class' outer hull were capable of image magnification and allowed a varied choice of viewing angles.
 
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[[File:USS Enterprise over Genesis.png|thumb|left|The refitted USS ''Enterprise'' over the Genesis planet.]]
  +
During the early [[2270s]], ''Constitution''-class starships underwent a major [[refit]] program. The actual refitting took eighteen [[month]]s of work and essentially a new vessel was built onto the bones of the old, replacing virtually every major system. The USS ''Enterprise'' continued to serve in its prominent role. In the early 2270s, the ''Enterprise'' was critical in defending the Federation from several external threats, including the ''[[V'Ger]]'' probe, after the probe returned home to find its creator, and [[Khan Noonien Singh]]. ({{film|1}}; {{film|2}}; {{film|3}})
   
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[[File:USS Enterprise-A quarter.jpg|thumb|''Constitution''-class refit, USS ''Enterprise'' NCC-1701-A, circa 2290s.]]
Only one [[turbolift]] serviced the bridge of the original configuration vessels. On the refit ''Constitution''s, the bridge had access to two. ''([[Star Trek: The Motion Picture]])''
 
  +
In [[2293]], a [[Task force]] consisting of the ''Constitution''-class {{USS|Ahwahnee|NCC-2048}}, {{USS|Eagle}}, {{USS|Emden}}, {{USS|Endeavour|NCC-1895}}, and {{USS|Potemkin|NCC-1657}} was assembled to assist with rescuing of James T. Kirk, and [[Leonard McCoy]] from Klingon captivity as part of [[Operation Retrieve]]. The task force was disbanded after the USS ''Enterprise''-A entered Klingon space on its own. {{incite}} ({{film|6}})
   
  +
At least a few ''Constitution''-class ships remained in service through the [[24th century]], with at least [[Constitution class 004|one ship]] having engaged the [[Borg]] at [[Battle of Wolf 359]]. ({{TNG|The Best of Both Worlds, Part II}})
:''The Starfleet Technical Manual, now considered apocryphal, states that the bridge is rotated 37° port, which would have the turbolift shaft travel down the centerline of the saucer section. No good reason is given as to why the bridge crew is looking in another direction than they're travelling.''
 
   
  +
[[Constitution class 003|Another ship]] preserved in the [[Fleet Museum]] in its original configuration. ({{TNG|Relics}})
===Officers' Lounge===
 
[[Image:Constitution class refit lounge.jpg|thumb|210px|Refit configuration officers' lounge.]]
 
Located at the stern of Deck 3 aboard the Refit Configuration ''Constitution'' class starship was the officers' lounge. Here, four huge view ports afforded a spectacular view of the ship's warp nacelles and space beyond. To the sides, small planet areas holded flora from several worlds and a small pool featured fresh-water tropical fish. Just forward of this section of the lounge were two privacy areas. In each privacy area, a view screen was mounted into the wall, providing a full exterior tour of the vessel. ''([[Star Trek: The Motion Picture]])''
 
   
  +
== Technical data ==
===Officers' Quarters===
 
  +
=== Physical arrangement ===
[[Image:Original Enterprise quarters.jpg|thumb|140px|Crew quarters.]]
 
  +
The ''Constitution''-class featured the [[saucer section]]-[[engineering section]]-[[warp nacelle]] layout common to most Starfleet vessels. All ships of the class of the same level of refit appeared to be identical at first glance, but closer inspection revealed minor detail differences on certain vessels. ({{TOS|The Cage|The Ultimate Computer}}; {{film|1}}; etc.)
Crew quarters were located throughout the saucer section - keeping with [[Starfleet]] tradition, Deck 5 housed the senior officers' quarters. These staterooms were quite similar to the V.I.P. units on Deck 4, with only a few differences.
 
[[Image:Constitution class refit officers quarters.jpg|thumb|left|200px|Refit configuration officers' quaters.]]
 
The sleeping area holded a single large bed which could double as a sofa during off-duty relaxation. The room's corner circular nook, normally occupied by a dining booth, could be modified at the officer's request.
 
   
  +
{{bginfo|There have been three different renditions of the original design:<br />
:''On [[Star Trek|the original series]], several "different" crew quarters were seen, but always the same set was used, changed by different lighting designs and furniture configuration.''
 
  +
[[File:USS Enterprise profile view, 2254-R.jpg|thumb|The ''Constitution''-class as it appears in TOS-R "The Cage"]]
  +
''The [[Constitution class model (original)|first model]], used in the original pilot "The Cage", featured a larger bridge dome and sensor/deflector dish, and spikes on the Bussard collectors, among other minor differences. The second configuration, used in the second pilot, and throughout the rest of the series due to footage being reused, was similar to the first version, with the addition of running lights, additional markings, and a grille pattern on the rear of each engine nacelle.''|[[File:USS Enterprise (NCC-1701), ENT.jpg|thumb|left|The ''Constitution''-class as it appears in TOS-R]]
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''The version used for the production of the regular series had a smaller bridge dome, a smaller sensor/deflector dish, and lighting effects in the Bussard collectors, which had their antenna spikes removed. The remastered edition of TOS replaced the anomalous stock shots in later episodes with the proper configuration.''|[[File:USS Enterprise, 2257.jpg|thumb|The ''Constitution''-class as it appears in DIS]]
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''A new, [[Constitution class model (retcon)|redesigned model]] for the ''Constitution''-class USS ''Enterprise'' was introduced in "Will You Take My Hand?". After briefly considering a radical departure from previous depictions, the designers of this new model instead aimed "''to get as close as possible to the original''", yet add "''the sleek, unique ''Discovery'' look to it.''" While DIS used this new model for all "current" depictions of the class, the "previously on" opening sequence of the ''Discovery'' episode "If Memory Serves" utilized an un-remastered shot of the TOS series version, in place of the pilot version, for the events of "The Cage".''<sup>[[#footnote 4|4]]</sup> A holographic image of this version of the ''Enterprise'' was also featured in the {{s|PIC}} episode {{e|Maps and Legends}}.<sup>[[#footnote 5|5]]</sup>}}
   
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Various science labs, numbering fourteen in all, ({{TOS|Operation -- Annihilate!}}) were located in the primary hull in the class's original configuration. An officers' lounge and dining area would be located in the aft superstructure beneath the bridge after the [[2270s]] refit. {{incite|This area was briefly seen during TMP, but was it called out as such other than in production materials?}} ({{film|1}}) There were at least seven [[turbolift]]s that serviced the primary and secondary hulls. ({{TOS|The Man Trap}}) The ''Constitution''-class had at least two [[briefing room]]s, one of which was located on Deck 14. ({{TOS|Mudd's Women}}) The modular design of the ''Constitution''-class allowed for component separation in times of crisis. The primary and secondary hulls could separate where the connecting "neck" joined the saucer, allowing either section to serve as a lifeboat if the other was too badly damaged. {{incite}} If an emergency was confined to the [[nacelle|warp engine nacelles]], it was theoretically possible to disengage and jettison them while keeping the bulk of the vessel intact. Any hull separation was considered a dangerous procedure and not always an option. ({{TOS|The Apple|The Savage Curtain}})
===Recreational Facilities===
 
[[Image:Constitution class refit recreation.jpg|thumb|200px|Refit configuration recreation room.]]
 
Aboard the original ''Constitution'' class starships, there were at least six recreation rooms, which included [[Three-dimensional chess|three dimensional chess]] and card game tables. Also aboard were a gymnasium, a bowling alley, a threatre, and a chapel. ''([[TOS]]: "[[Charlie X]]", "[[The Naked Time]]", "[[The Conscience of the King]]")''
 
   
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Though not an aerodynamic craft, in emergencies, ''Constitution''-class vessels were able to break orbit and enter a [[class M]] [[planet]]'s upper [[atmosphere]] (and maintain altitude control while passing through it) for a limited period of time, conditional on the ship's ability to re-achieve escape velocity. ({{TOS|Tomorrow is Yesterday}})
On the refited ''Constitution'' class vessels, recreational facilities were further expanded. One large room in the centre of the starship's saucer section furnished off-duty personnel with a wide variety of recreational games and entertainment.
 
   
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[[:File:Constitution class variant model.jpg|A model]] of a refit version of this ship present in a holographic simulation of [[Drafting Room 5]] at [[Utopia Planitia Fleet Yards]] had the warp nacelles rotated 90 degrees and included additional hatches along both sides of the saucer. ({{TNG|Booby Trap}})
At the front of the room was an immense, wall-mounted viewing screen. Beneath this was an information display alcove; five small screens exhibited, upon request, a choice of pictorial histories. A raised platform in the centre of the lower level floor featured a diversity of electronic entertainment.
 
   
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{{bginfo|It is not clear whether an operational vessel existed in this configuration, or if it was merely a display model.}}
===Medical Facilities===
 
On the original ''Constitution'' class starships, a [[Sickbay]] facility was located on Deck 6, which featured an examination room, a nursery, the [[Chief Medical Officer]]'s office and a medical lab. Elsewhere on the vessel, another medical lab and a biopsy were located. ''([[TOS]]: "[[The Naked Time]]")''
 
[[Image:Constitution class refit sickbay.jpg|thumb|left|Refit configuration sickbay.]]
 
   
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=== Propulsion systems ===
:''The sickbay set of the pilot episode ''"[[Where No Man Has Gone Before]]"'' underwent considerably changes following the shooting of the episode for the remainder of the series.''
 
  +
[[File:USS Defiant (NCC-1764) at warp.png|thumb|The ''Defiant'', an original configuration ''Constitution''-class vessel cruising at warp in the mirror universe]]
  +
The ''Constitution''-class of starships has been fitted with both [[lithium]] and [[dilithium]] reactor circuits in the warp drive assembly over its service lifetime. The vessel's standard [[cruising speed]] was [[warp]] 6, while its maximum cruising speed was warp 8. Warp 9 was also possible for this class of starship, although it was highly discouraged because it was an unsafe velocity. {{incite}}
   
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The ''Enterprise'' was twice modified to achieve a speed of warp 11. The probe ''[[Nomad]]'' increased the ship's engine efficiency by 57% in [[2267]], allowing the ship to reach warp 11, but Kirk persuaded ''Nomad'' to reverse its "repairs" because the ship's structure could not stand the stress of that much power, and it would eventually destroy the ship. ({{TOS|The Changeling}})
With the class refit of 2271, the Medical Facilities of the ''Constitution'' class starship were considerably updated. New micro-diagnostic tables were capable of fully analyzing the humanoid body at the sub-cellular level, offering the physician a total understanding of the patient's status. Another new addition was the medical stasis unit, in which patients whose conditions were considered immediately life-threatening could be placed into suspended animation until the proper cure or surgical procedure could be established. ''([[Star Trek: The Motion Picture]])''
 
   
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More extensive modifications were made to the ship by the [[Kelvan]]s in [[2268]], who were able to produce velocities that were far beyond the reach of Federation science, allowing the ''Enterprise'' to safely maintain a cruising speed of warp 11 while traveling through the intergalactic void. ({{TOS|By Any Other Name}})
===Transporter Systems===
 
Extravehicular transporter to and from the ship was accomplished by a number of transporter systems, which allowed personnel or equipment to be transported over large ranges. The transporter platform featured six pads, which were numbered clockwise, beginning with the right front. A redesigned field generator matrix was mounted into the rear wall of the chamber aboard the refit configuration ''Constitution'' class starships.
 
[[Image:Constitution class refit transporter.jpg|thumb|190px|left|Refit configuration transporter.]]
 
Aboard the refited ''Constitution'' class vessels, the transporter operator stood within an enclosed control pod, which had a floor-to-ceiling transparent aluminium panel through which he or she could view the transport platform. This panel served to shield the operator from the effects of any cumulative radiations emitted by the new transporter machinery, a side effect of the more powerful system.
 
[[Image:Constitution class refit armoury.jpg|thumb|200px|Refit configuration staging area.]]
 
A door in the standard transporter room wall leaded to a staging area where landing parties prepared for transporter. Four spacesuit lockers line one wall; each containing one suit, providing enough to clothe a standard party of four. A small, locked arms cabinet holded phasers; communicators, tricoders, translators, and outerwear were contained in a separate cabinet on another wall. ''([[Star Trek: The Motion Picture]])''
 
   
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The maximum warp speed recorded for this class by itself was warp 14.1, achieved by the ''Enterprise'' due to sabotage to the vessel's [[warp drive]] system. While the ship itself was not structured to take that speed for any length of time, the ''Enterprise'' was able to maintain that velocity for nearly fifteen minutes. ({{TOS|That Which Survives}})
===Engineering Section===
 
[[Main Engineering]] was from where the ship's [[warp|warp system]] was controlled. All thrust and power systems were primarily controlled form this site, as were the vessel's [[life support]] and gravitional control systems. ''([[TOS]]: "[[The Ultimate Computer]]")''
 
[[Image:Constitution Engineering.jpg|thumb|210px|Refit configuration engineering.]]
 
During the [[2271]] ''Constitution'' class refit, the interior design of the engineering section was drastically upgraded, featuring the vertical [[warp core]] and the horizontal intermix area. Main Engineering was lodged on Decks 14 and 15. Deck 14 was the uppermost level of the engineering hull, and was the anchoring framework for the connecting dorsal and the warp nacelle pylons. On the forward end of the deck was the engineering computer monitoring room, which encircled the cortical intermix shaft and opens, to the rear, into the engineering computer bay.
 
[[Image:Constitution class refit engineering.jpg|thumb|200px|left|Refit configuration engineering.]]
 
Deck 15 housed the main engineering room. Located in the centre of the room, and extending for many levels both above and below the deck, was the vertical linear intermix chamber. This complex, radically new design in intermix technology, provided operational power for the impulse drive system and furnished enough additional energy to power all other shipboard systems. Both matter and antimatter for this chamber were contained in a series of magnetic bottles, which were housed in pods at the base of the intermix shaft. ''([[Star Trek: The Motion Picture]])''
 
   
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{{dthumb|USS Enterprise maintaining impulse thrust.jpg|Constitution class refit impulsedrive.jpg|A close-up of the impulse drive assembly on the original configuration in 2265|...and on the 2270s refit configuration}}
===Landing Bay and Cargo Facilities===
 
Deck 17 was the main access level of the [[engineering hull]]. The aft landing bay provided personnel in small craft with a means of entering or exiting the vessel, as did docking port on either side of the level.
 
   
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The ''Enterprise'' also maintained stability at warp 22 while tractored to a ship going warp 32. ({{TAS|The Counter-Clock Incident}})
The refit configuration ''Constitution'' class starship featured a new landing bay design. A wide range of [[Starfleet]] and [[Federation]] craft could utilize this state-of-the-art landing facility. Alcoves on either side of the landing bay provided storage for up to six standard work bees, and furnished all necessary recharging and refuelling equipment. Additional space was available for the storage of non-ship shuttlecraft.
 
[[Image:Constitution class refit landingbay.jpg|thumb|210px|Refit configuration landing bay.]]
 
Just within the landing bay doors was a force field generator unit, which was built into the main bulkheads on either side of the entry area. This field allowed craft to enter the ship, while at the same time retaining the atmosphere and temperature within the landing bay.
 
   
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Following the 2270s refit of the class, the ''Constitution'' was equipped with a linear dilithium-controlled MARA (matter/antimatter reactor assembly), and a pulse dilithium-controlled assembly was installed by the mid [[2290]]s aboard the USS ''Enterprise''. ({{film|2}}; {{film|6}}) {{incite|Not sure if the warp cores were called by these terms in dialogue - were there graphics using these terms? If so it should be made clear.}}
Deck 18, the refit configuration shuttlecraft hanger bay, was situated at the widest point of the engineering hull. Much of the deck consisted of open space, as it was the midlevel of the cargo facility; thirty-two cargo pod modules could be stored in the alcoves lining the forward, port, and starboard sides of the bay.
 
   
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The ''Constitution''-class's [[impulse drive]] system was a twin-port engine, capable of velocities at least warp factor 0.8. ({{film|1}}) A fusion explosion equivalent to at least 97.835 megatons would result if the impulse engines were overloaded. ({{TOS|The Doomsday Machine}})
The shuttle hangar had sufficient room for the storage of four craft at any given time. During normal storage situations, these shuttlecraft faced aft ward.
 
   
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=== Tactical systems ===
This deck also housed the vessel's lifeboat facilities. These one-man craft, which escaped through blow-away panels in the side of the secondary hull, were provided for those persons were unable to reach the primary hull in case of an emergency. ''([[Star Trek: The Motion Picture]])''
 
  +
While the Constitution class was never meant as a [[warship]], the vessel was adequately well-armed for dealing with various threats. Exercising Federation defense policy and if need be sustained conflict was built into them. Thus they carried an array of weapons thus allowing them to hold their own against even [[D7 class|dedicated]] warships of its day.
  +
==== Phaser batteries ====
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[[File:USS Enterprise firing phasers.jpg|thumb|USS ''Enterprise'' firing her main batteries]]
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During the early [[2250s]], ''Constitution''-class heavy cruisers were armed with a complement of [[directed energy weapon]]s, that possessed enough {{dis|power|physics}} to destroy half a [[continent]] in a concentrated bombardment. In addition, these vessels carried on board [[laser cannon]]s, capable of operating on [[energy]] [[Energy beam|fed remotely]] from the ship. ({{TOS|The Cage|The Menagerie, Part I|The Menagerie, Part II}})
   
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{{bginfo|According to the ''[[Star Trek Spaceflight Chronology]]'' (p. 164), the advanced ship-board laser banks used by ''Constitution''-class starships were upgraded to phaser banks four years after the ''Enterprise'' had visited [[Talos IV]] in "The Cage".}}
==Ships Commissioned==
 
[[Image:Constitutions formation.jpg|thumb|Four ''Constitution''s fly in formation.]]
 
*[[USS Constitution|USS ''Constitution'']] (NCC-1700)
 
*[[USS Constellation|USS ''Constellation'']] (NCC-1017)
 
*[[USS Defiant (NCC-1764)|USS ''Defiant'']] (NCC-1764)
 
*[[USS Enterprise (NCC-1701)|USS ''Enterprise'']] (NCC-1701)
 
*[[USS Enterprise (NCC-1701-A)|USS ''Enterprise'']] (NCC-1701-A)
 
*[[USS Excalibur|USS ''Excalibur'']]
 
*[[USS Exeter|USS ''Exeter'']]
 
*[[USS Hood|USS ''Hood'']]
 
*[[USS Intrepid|USS ''Intrepid'']]
 
*[[USS Lexington|USS ''Lexington'']]
 
*[[USS Potemkin|USS ''Potemkin'']]
 
*[[USS Yorktown|USS ''Yorktown'']]
 
   
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By [[2257]], [[phaser bank]]s were standard complement aboard this class of ship. A bank actually consisted of a single emitter and its power supply, though it was common practice to fire two banks at a time and refer to it as a single firing. ({{DIS|Such Sweet Sorrow}}; {{TOS|The Corbomite Maneuver|The Doomsday Machine|The Paradise Syndrome}})
===Uncertain Ships===
 
*[[USS Essex|USS ''Essex'']]
 
*[[USS Farragut|USS ''Farragut'']]
 
*[[USS Kongo|USS ''Kongo'']] (NCC-1710)
 
*[[USS Republic|USS ''Republic'']] (NCC-1371)
 
   
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Ship-mounted phaser banks had a range of approximately 90,000 [[kilometer]]s. Like hand phasers, they were capable of being adjusted to stun, heat, or disintegrate targets, including objects or beings in space or on a planet's surface. The focus could be adjusted from a narrow to a wide beam. When only motion sensor readings were available, the ship's phasers could be set for [[proximity blast]] and bracket the approximate [[coordinates]] of the target. ({{TOS|Balance of Terror|A Piece of the Action|The Ultimate Computer|Who Mourns for Adonais?|The Paradise Syndrome}}, {{e|The Tholian Web}})
==Appendices==
 
===Appearances===
 
*[[Star Trek: The Original Series]]
 
*[[Star Trek: The Motion Picture]]
 
*[[Star Trek II: The Wrath of Khan]]
 
*[[Star Trek III: The Search for Spock]]
 
*[[Star Trek IV: The Voyage Home]]
 
*[[Star Trek V: The Final Frontier]]
 
*[[Star Trek VI: The Undiscovered Country]]
 
   
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{{dthumb|Defiant phaser banks.jpg|USS Defiant (NCC-1764) firing aft phasers.jpg|Original configuration ''Constitution''-class USS ''Defiant'' ventral forward facing primary hull phaser banks above the torpedo launcher|...and seen firing its secondary hull aft phasers}}
===Background===
 
[[Image:Constitution class model.jpg|thumb|160px|''Constitution'' class model.]]
 
[[Matt Jefferies]] designed the original ''Constitution'' class starship for [[Star Trek|the original series]]. The image to the right show the almost final version of the first ''Enterprise''. The next design stage was the preparation of scale drawing for model builder [[Don Loos]], incorporating the final changes that would turn this into the ''Enterprise'' recognized by millions.
 
   
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In the original configuration, a battery of several forward phaser emitters was located on the lower part of the ventral side of the saucer section. Aft firing banks were located above and below the [[shuttlebay]] on the [[secondary hull]]. There were also port, starboard, and midship phasers. ({{ENT|In a Mirror, Darkly, Part II}}; {{TOS|Balance of Terror|The Paradise Syndrome|Arena|Friday's Child|Turnabout Intruder}}; {{DIS|Such Sweet Sorrow, Part 2}}).
For [[Star Trek: The Motion Picture]], a new ''Enterprise'' was designed by [[Andrew Probert]], based upon [[Mike Minor]]'s concepts for [[Star Trek: Phase II]]. Other artists who worked on the refit design were [[Joe Jennings]], [[Douglas Trumbull]], and [[Harald Michelson]].
 
   
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{{bginfo|Based on dialogue from "The Paradise Syndrome", there were four forward phasers, though the visual effects in that episode depict two phasers firing on each discharge, suggesting a battery of eight forward phaser emitters.|In a scene description from the final draft script of "In a Mirror, Darkly, Part II", the aft phaser was said to be "beneath the hangar deck." However, the location of the aft phaser is shown on-screen to be above the hangar deck.|A [[:File:Constitution class, NCC-1700, Datalore.jpg|top view graphic]] of the original ''Constitution''-class configuration, used on a computer screen in {{TNG|Datalore}}, depicts the port and starboard emitters on the dorsal surface of the primary hull. Two banks cover both flanks.}}
====Interior Design====
 
<table class="wiki-sidebar">
 
<tr><td colspan="2" align="left">[[Image:Officers lounge location.jpg|200px|Officers' lounge elevation sketch.]]</td></tr>
 
<tr><td colspan="2" align="left">[[Image:Officers lounge concept.jpg|200px|Officers' lounge concept art.]]</td></tr>
 
</table>
 
[[Andrew Probert]] was production illustrator for ''The Motion Picture''. A key concern of his was was that the sets built somehow conform to the structure of the starship they are supposed to exist within. Here we see Andrew Probert's development sketches for an officer's lounge in the saucer section's upper dome. Probert's concept art was, however, not used for the movie, and a much cheaper set was constructed for the scene.
 
[[Image:Mike Minor cargodeck.jpg|thumb|left|140px|Mike Minor concept.]]
 
Probert's main contribution for the ''Enterprise'' interior came in the form of the vessel's cargo deck, thoughts on which had already been visualized by veteran [[Mike Minor]], before Probert had a chance to address it. Minor worked at the Paramount lot, while Probert was at the Robert Abel special effects facility designing various pieces of space hardware.
 
<table class="wiki-sidebar">
 
<tr><td colspan="2" align="center">[[Image:TMP cargobay film.jpg|200px|Filmed cargo deck scene.]]</td></tr>
 
<tr><td colspan="2" align="center">[[Image:TMP cargobay matte.jpg|200px|Matte painting.]]</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Probert matte rendering.jpg|200px|Andrew Probert matte rendering.]]</td></tr>
 
<tr><td colspan="2" align="center">[[Image:Probert matte rendering 2.jpg|200px|Andrew Probert matte rendering.]]</td></tr>
 
</table>
 
The thinking, then at Paramount under production designer [[Harold Michaelson]], was that the cargo bay would be a space 30 feet high that had two walls with twelve holes containing cargo pods. Mike Minor's cargo deck design shows us cargo pods simply stacked or lined up on the deck, leaving a huge open and unused space above. The walkways along the sides were also rather old fashioned looking.
 
   
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[[File:Constitution class refit configuration phasers.jpg|thumb|left|A refit ''Constitution'' vessel fires its forward phasers]]
The image to the right shows the plate of the cargo deck scene, filmed from [[James T. Kirk|Kirk]]'s perspective as he enters the new ''Enterprise''. What Andrew Probert was required to do was to get a frame of plate film and have it printed at a pre-determined size. Part of this frame, required for the live action elements, would be cut out and pasted to a piece of illustration board. The remaining blank board, intended to be the matte, would then be painted around that piece, blending the two together.
 
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After the refit of the [[2270s]], ''Constitution''-class ships mounted three dual-emitter phaser banks on the ventral and three on dorsal faces of the saucer. They covered the forward, port and starboard flanks. Two single emitter aft banks were above the shuttlebay and four midship single emitter banks were located on the ventral surface of the engineering hull. Phaser power was increased by drawing energy directly from the warp drive. This increase in firepower had a drawback, in that the phasers would be cut off if the main reactor was off-line. This problem hampered the USS ''Enterprise'' on at least two occasions, one in the 2270s and again in [[2285]]. ({{film|1}}; {{film|2}})
[[Image:TMP Enterprise cut.jpg|thumb|140px|left|Cargo deck sketch.]]
 
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{{clear}}
Following a discussion with [[Douglas Trumbull]] examining the logic of the early cargo deck concepts, this elevation sketch of the ''Enterprise'' was drawn by Andrew Probert upon Trumbull's question how the pods would get in and out of the cargo deck. What Probert proposed was that the landing bay and cargo deck be connected, allowing the easy passage of cargo trains.
 
   
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==== Torpedo systems ====
The idea was that shuttles would normally take off from and land in the landing bay. They then could be lowered to the Hanger Bay level, or lowered another level to shuttle maintenance. A multi-paneled two-story door, between the elevators and cargo bay, has been opened to the sides allowing the transfer of cargo.
 
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[[File:USS Enterprise fires photon torpedo.jpg|thumb|Torpedo launcher (original configuration)]]
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Early configuration ''Constitution''-class ships originally mounted six forward [[torpedo tube]]s on the underside of the saucer section, {{incite|Based on the background info below this is speculation and not a fact. The section should be rewritten to focus on what was actually said in the episode.}} and one aft mounted tube at the end of the secondary hull. This combined arsenal was powerful enough to destroy the entire surface of a planet. ({{TOS|Arena|A Taste of Armageddon|Journey to Babel}}; {{TAS|More Tribbles, More Troubles}}; {{ENT|In a Mirror, Darkly, Part II}})
   
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{{bginfo|The number of forward torpedo tubes is based on the line of dialogue "''fire photon torpedoes two, four, and six''" from "Journey to Babel," and the dialogue and scene from {{e|Elaan of Troyius}} in which all tubes were brought to bear and the full spread of torpedoes from the forward tubes consisted of six photon torpedoes.|Dialogue from "A Taste of Armageddon" states that the ''Enterprise'' possessed a complement of at least "a few dozen." According to the ''[[Star Trek Spaceflight Chronology]]'' (p. 164), in the original configuration the ship carried a total of four hundred photon torpedoes.}}
===Apocrypha===
 
''Although not considered canon, several sources have produced a long list of ''Constitution'' class starships. The main source was [[Franz Joseph]]'s [[Star Trek Star Fleet Technical Manual|Star Fleet Technical Manual]], which listed over 100 ''Constitution'' class ships divided into sub-classes: Constitution, Bonhomme Richard, Achernar and Tikopai. Ships of the class were later expanded by other publications such as [[Ships of the Starfleet]] which included the Endeavour, Enterprise and Enterprise (II) sub-classes.''
 
   
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[[File:Torpedo bay display.jpg|left|thumb|Torpedo manifest (refit configuration)]]
* ''[[USS Constitution|USS Constitution (NCC-1700)]]''
 
  +
[[File:Constitution class refit torpedo.jpg|thumb|Torpedo launcher (refit configuration)]]
* ''[[USS Constellation]] (NCC-1017)''
 
  +
The post-refit vessels had two forward firing [[torpedo launcher]]s, though each tube could fire at least two torpedoes before reloading. ({{film|2}}; {{film|3}})
* ''[[USS Republic]] (NCC-1371)''
 
* ''[[USS Enterprise (NCC-1701)]]''
 
* ''[[USS Farragut]] (NCC-1702)''
 
* ''[[USS Lexington]] (NCC-1703)''
 
* ''[[USS Yorktown]] (NCC-1704)''
 
* ''[[USS Excalibur]] (NCC-1705)''
 
* ''[[USS Exeter]] (NCC-1706)''
 
* ''[[USS Hood]] (NCC-1707)''
 
* ''[[USS Intrepid]] (NCC-1708)''
 
* ''[[USS Valiant]] (NCC-1709)''
 
* ''[[USS Kongo|USS Kongo (NCC-1710)]]''
 
* ''[[USS Potemkin]] (NCC-1711)''
 
* ''USS Bonhomme Richard (NCC-1712)''
 
* ''[[USS Monitor]] (NCC-1713)''
 
* ''[[USS Hornet]] (NCC-1714)''
 
* ''[[USS Merrimack]] (NCC-1715)''
 
* ''[[USS Endeavour]] (NCC-1716)''
 
* ''[[USS Defiant (NCC-1764)|USS Defiant]] (NCC-1717)''
 
* ''[[USS Excelsior]] (NCC-1718)''
 
* ''[[USS Eagle]] (NCC-1719)''
 
* ''USS Lafayette (NCC-1720)''
 
* ''USS Wasp (NCC-1721)''
 
* ''USS El Dorado (NCC-1722)''
 
* ''USS Ari (NCC-1723)''
 
* ''[[USS Saratoga]] (NCC-1724)''
 
* ''USS Tori (NCC-1725)''
 
* ''USS Krieger (NCC-1726)''
 
* ''[[USS Essex]] (NCC-1727)''
 
* ''USS Truxton (NCC-1728)''
 
* ''USS Confiance (NCC-1729)''
 
* ''USS Bunker Hill (NCC-1730)''
 
* ''USS La Vengeance (NCC-1731)''
 
* ''USS Achernar (NCC-1732)''
 
* ''USS Sol (NCC-1733)''
 
* ''USS Jupiter (NCC-1734)''
 
* ''USS Rigel Kentaurus (NCC-1735)''
 
* ''USS Quindar (NCC-1736)''
 
* ''USS Proxima (NCC-1737)''
 
* ''USS Androcus (NCC-1738)''
 
* ''USS Astrad (NCC-1739)''
 
* ''USS Mondoloy (NCC-1740)''
 
* ''USS Alfr (NCC-1741)''
 
* ''USS Thelonii (NCC-1742)''
 
* ''USS Xanthii (NCC-1743)''
 
* ''USS Sirius (NCC-1744)''
 
* Registries NCC-1745 to NCC-1799 assigned, but never built.
 
   
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{{bginfo|Based on the torpedo manifest graphic in {{film|6}}, the refitted ''Constitution''-class was armed with a total of 144 photon torpedoes, arranged in twelve stacks, each containing twelve torpedoes on top of one another.}}
===Footnotes===
 
*'''Registry numbers''': Although the ''[[Star Trek Encyclopedia]]'' and other references provide complete registry numbers for many Constitution class ships, these numbers are at best conjecture. Many of the Encyclopedia's numbers, especially, were derived from the faulty assumption that the list seen on the wall at Starbase 11 in [[Court Martial]] were all Constitutions. Many fans now doubt that claim.
 
   
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{{clear}}
*'''Uncertain ships''': These ships have been listed in various references as Constitutions, but were never seen on screen as such, and are therefore of uncertain class.
 
  +
==== Deflector shields ====
  +
[[File:Deflector status display, Constitution class.jpg|thumb|Deflector status display]]
  +
The ''Constitution''-class starship had a powerful [[deflector shield]] grid in the [[2260s]]. The shield grid was divided into four segments, referred to as "number one shield", "number two shield", etc. ({{TOS|Journey to Babel|Elaan of Troyius}}) At full power, with the warp reactor tied into the shield system, it was capable of absorbing and repulsing a bombardment of energy impacts equal to the detonation of 360 [[photon torpedo]]es of the type the ''Enterprise'' was equipped with at the time, before the shielding power was completely lost. In [[2267]], for example, the ''Enterprise'' survived an attack from the ''[[Nomad]]'' probe. ''Nomad'' fired four powerful bolts of [[energy]], each with the equivalent force of ninety photon torpedoes. The first hit reduced shielding power only by twenty percent. After being hit with the equal force of 270 photon torpedoes, warp maneuvering power was lost. Shields were lost with the fourth hit. ({{TOS|The Changeling}})
   
  +
The deflector shield grid was much more vulnerable to intense standard [[phaser]] bombardment. In [[2268]], an [[Orion scout ship]] was able to cause buckling in some of the shields of the ''Enterprise'' after it had made just five attack runs on the ship. On the seventh run, the ''Enterprise'' lost one of its four shields. ({{TOS|Journey to Babel}}) Other more powerful weaponry could take the shields down even more easily, the [[planet killer]] for example could completely deplete a ''Constitution''-class starship's shielding power with only three hits with its [[antiproton beam]]. ({{TOS|The Doomsday Machine}})
*'''"Starship" class''': If you read the dedication plaque on the bridge of the original Enterprise, it was actually listed as "Starship Class". The term Constitution class came later, probably from "[[Space Seed]]", where one of [[Montgomery Scott|Scotty]]'s technical manual screens showed a phaser bank diagram for a "Constitution class" starship. Though it was "understood" to have been Constitution Class by both production staff and fans alike, the first time it was actually referred to as such was by Captain [[Jean-Luc Picard]] in "[[The Naked Now]]".
 
   
  +
The diversion of all but [[emergency maintenance power]] to the shields had the adverse effect of reducing phaser power by fifty percent. ({{TOS|The Tholian Web}}) A single detonation of a [[nuclear warhead]] less than a hundred meters away could cause internal overloads on the ship and leak [[radiation]] through the shields to the outer regions of the ship. ({{TOS|Balance of Terror}}) Without the warp reactor to power the shields, the system was not very effective in protecting the ship. With only the [[impulse reactor]]s powering the shields, a {{class|D7}} [[Klingon]] [[battle cruiser]] could deplete a ''Constitution''-class starships shielding power with only few passes of [[disruptor]] fire. ({{TOS|Elaan of Troyius}})
*'''"Enterprise" class''': The exact designation of the Constitution refit is a divisive one within ''Star Trek'' fandom. Some maintain that the comprehensive nature of the refit of the Constitutions between [[TOS]] and the movie era constitutes a new starship class, while others consider the two types maintaining the same profile and hull geometry as keeping the class consistent.
 
   
  +
After the refit, in the [[2280s]], a ''Constitution''-class starships needed 13.5 seconds to lower and raise their shields when taking a [[shuttlecraft]] on board via its [[tractor beam]]. Piloting the shuttle manually reduced this time significantly. ({{film|5}}) During [[yellow alert]]s, [[defense field]]s were activated to offer basic protection to the main bridge. ({{film|2}})
: In [[Star Trek II: The Wrath of Khan]], the [[USS Enterprise (NCC-1701)|USS ''Enterprise'']] simulator at [[Starfleet Academy]] refers to the ship as an "Enterprise class" vessel. However, the blueprints that Scotty is seen examining in [[Star Trek VI: The Undiscovered Country]] are labeled "Constitution Class (Refit)".
 
   
  +
{{bginfo|According to ''[[Mr. Scott's Guide to the Enterprise]]'' (p. 14), the deflector shields after the refit in the 2270s, were redesigned as a massive [[replicator]] system, projecting an invisible hull layer, molecularly identical to the [[diburnium]]-[[osmium]] alloy used to build the [[Kalandan outpost]] seen in the episode {{TOS|That Which Survives}}.}}
: Both designations are supported by behind the scenes material and interviews, [[Andrew Probert]] in particular mentioning that the design for the refit was originally designated "''Enterprise''-class".
 
   
  +
=== Transporter systems ===
: The official [[canon]] maintains the (Refit) classification as the correct designation.
 
  +
Extravehicular transporter to and from the ship was accomplished by a number of transporter systems, which allowed personnel or equipment to be transported over large ranges. The transporter platform featured six pads, which were numbered clockwise, beginning with the right front. A redesigned field generator matrix was mounted into the rear wall of the chamber aboard the refit configuration ''Constitution''-class starships. {{incite}}
   
  +
Aboard the refitted ''Constitution''-class vessels, the transporter operator stood within an enclosed control pod, which had a floor-to-ceiling transparent aluminum panel through which he or she could view the transport platform. This panel served to shield the operator from the effects of any cumulative radiations emitted by the new transporter machinery, a side effect of the more powerful system. {{incite}}
*'''USS Yorktown''': [[Gene Roddenberry]] suggested that the [[USS Enterprise (NCC-1701-A)|USS ''Enterprise''-A]] was first designated as [[USS Yorktown|USS ''Yorktown'']], and later recommissioned as USS ''Enterprise''-A.
 
   
  +
A door in the standard transporter room wall led to a staging area where landing parties prepared for transporter. {{incite}}
[[de:Constitution Klasse]] [[nl:Constitution klasse]]
 
  +
[[Category:Starship classes|Constitution]]
 
  +
<gallery>
{{featured}}
 
  +
File:Constitution transporter 2250s.jpg|Inward view of a [[transporter room]] from the late [[2250s]]
  +
File:Constitution original transporter.jpg|Inward view of a transporter room from the late 2260s
  +
File:Constitution transporter.jpg|Transporter in [[2266]]
  +
File:Constitution class refit transporter.jpg|Refit configuration transporter room late 2280s-early 2290s
  +
</gallery>
  +
  +
=== Crew support systems ===
  +
==== Medical systems ====
  +
[[File:USS Enterprise sickbay, TAS.jpg|thumb|Biobeds in sickbay]]
  +
On the original ''Constitution''-class starships, a [[sickbay]] facility was located on Deck 6, which featured an examination room, a nursery, the [[chief medical officer]]'s office and a medical lab. At least one other medical lab was located elsewhere on the vessel, and was used for biopsy, among other things. Sickbay was considered the safest place to be on the ship during combat. ({{TOS|The Naked Time|Elaan of Troyius}}) Many of the tools used in the Sickbay aboard the USS ''Enterprise'', following her launch, were designed by her first [[medical officer]], [[Doctor]] [[Sarah April]], as life aboard required frequent improvisation. ({{TAS|The Counter-Clock Incident}})
  +
  +
{{bginfo|The sickbay set of the pilot episode {{e|Where No Man Has Gone Before}} underwent considerable changes following the shooting of the episode for the remainder of the series.}}
  +
  +
[[File:Constitution class refit sickbay.jpg|thumb|left|Intensive Care Unit on a refit configuration vessel]]
  +
[[File:Constitution class refit examination room.jpg|thumb|Refit configuration examination room]]
  +
With the class refit of the 2270s, the medical facilities of the ''Constitution''-class starship were considerably updated. New micro-diagnostic tables were capable of fully analyzing the humanoid body at the sub-cellular level, offering the physician a total understanding of the patient's status.
  +
  +
Another new addition was a medical [[stasis unit]], in which patients whose conditions were considered immediately life-threatening could be placed into suspended animation until the proper cure or surgical procedure could be established. {{incite|I don't recall a stasis unit being mentioned in TMP.}} ({{film|1}})
  +
  +
== Interior design ==
  +
[[File:USS Enterprise corridor 2250s.jpg|thumb|A typical corridor on the ''Constitution''-class, late 2250s]]
  +
[[File:USS Enterprise corridor.jpg|thumb|A typical corridor on the ''Constitution''-class, 2260s]]
  +
The color scheme implemented aboard ''Constitution''-class ships was predominantly red accents alongside dark gray or light gray paneling. These colors were accented with soft white light or multi colored lights installed in floor and wall paneling, and later, in the ceiling. This color scheme was kept until the ''Constitution''-class refit in the early [[2270]]s. ({{s|TOS}} {{incite|Which episode(s)?}}; {{ENT|In a Mirror, Darkly|In a Mirror, Darkly, Part II}}; {{DIS|Brother|Such Sweet Sorrow|Such Sweet Sorrow, Part 2}}; {{ST|Q&A|The Trouble with Edward|Ask Not}})
  +
  +
[[File:Una and Spock in the turbolift.jpg|left|thumb|Turbolift car interior, late 2250s]]
  +
After the refit, the color scheme varied, changing from a beige tone, with red accents to a predominate overall gray/dark gray toward the [[2280]]s. ({{film|1}}; {{film|2}}; {{Film|3}}; {{film|4}}; {{film|5}}; {{film|6}})
  +
  +
=== Main bridge ===
  +
[[File:Constitution class bridge 2250s.jpg|thumb|Main bridge of the USS ''Enterprise'' in 2254]]
  +
As is typical for Starfleet vessels, the main bridge of the ''Constitution''-class was located on Deck 1 of the primary hull.
  +
  +
{{Bginfo|Multiple sets were used to represent the bridge of the original ''Constitution''-class. In {{s|TNG}}, a partial set was faithfully recreated for {{e|Relics}}, a full set was created for {{e|Trials and Tribble-ations}}, a new set with a slightly altered appearance was built for the two part {{e|In a Mirror, Darkly}} and {{e|In a Mirror, Darkly, Part II}}, and starting with {{e|Such Sweet Sorrow}}, a completely new set, with updated design, bigger overall diameter, and a blend of touchscreen and classic jelly bean controls was introduced.}}
  +
  +
[[File:USS Enterprise bridge, 2258.jpg|thumb|left|Main bridge of the USS ''Enterprise'' in 2258]]
  +
The [[command chair]] was located in the recessed area at the center of the room, in a direct line with the main viewer. This position was equidistant from all the control consoles that operated specific areas of the ship. Consequently, the {{dis|captain|rank}} could be immediately updated on the condition of the vessel or its crew during missions, and orders could be given clearly with a minimum of effort. The chair was mounted on a circular pillar, attached to a rectangular footplate that was directly anchored to the deck, giving it considerable support during an attack. It was designed to swivel on the support so that the captain could turn to any member of the bridge crew.
  +
  +
Piloting and navigation functions were carried out at the [[helm]] console, located in the center of the room, positioned in front of the command chair. This panel consisted of three main sections.
  +
  +
[[File:USS Defiant (NCC-1764) bridge.jpg|thumb|Main bridge of the USS ''Defiant'' from 2268]]
  +
On the left was a compartment which opened automatically to permit operation of the targeting scanner. Next to this was the main control panel, which operated maneuvering [[thruster]]s, [[impulse]] engines, and fired the ship's weapons. Directly below this panel was a row of eight flip-switches provided to set warp flight speeds.
  +
  +
The central section of the conn panel was fitted with a number of sensor monitor lights, and was dominated by two main features: the alert indicator and the [[astrogator]], which was used for long-range course plotting. The [[navigation console|navigator's station]] had a control panel for entering the course and heading data and the flight path indicator and supplied information on any deviations or course corrections in progress. It also had controls for the weapons systems.
  +
  +
[[File:Constitution class bridge console.jpg|thumb|left|A duotronic-based data-input bridge console]]
  +
Other stations on the bridge were provided for [[communications]], [[engineering]], weapons control, gravity control, [[damage control]], environmental engineering, [[Science station|science]] and [[library computer]], and internal security. All stations were normally manned at all times. {{incite|Were the stations ever called out in any primary source? If not this should be changed to a background note and source cited (SFTM, Making of Star Trek, Captain's Chair, etc).}}
  +
  +
Mounted into the room's forward bulkhead was the main [[viewscreen]]. Visual sensor pickups located at various points on the ''Constitution''-class' outer hull were capable of image magnification and allowed a varied choice of viewing angles. {{incite}}
  +
  +
The computer systems aboard the ''Constitution''-class starship were [[duotronic]] based. ({{TOS|The Ultimate Computer}}; {{DS9|Trials and Tribble-ations}})
  +
  +
==== Upgrades ====
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="1" align="center" | [[File:Enterprise bridge wide, TAS.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Constitution class refit bridge, 2270s.jpg|180px]]
  +
|-
  +
| class="even" | <center>Main bridge of the USS ''Enterprise'' ([[2269]])</center>
  +
| class="even" | <center>Refit configuration bridge ([[2270s]])</center>
  +
|-
  +
| colspan="1" align="center" | [[File:Constitution class refit bridge, 2286.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Constitution class refit bridge, 2293.jpg|180px]]
  +
|-
  +
| class="even" | <center>Refit configuration bridge ([[2286]])</center>
  +
| class="even" | <center>Refit configuration bridge ([[2293]])</center>
  +
|}
  +
Only one [[turbolift]] serviced the bridge of the original configuration ''Constitution''-class ship. In the late [[2260s]], some were refit with a second lift on the port forward section of the bridge. ({{TAS|Beyond the Farthest Star}}) After the major refit in the early 2270s, the bridge aboard ''Constitution''-class vessels would continue to utilize two turbolifts, but both would be located behind the command chair. ({{film|1}})
  +
  +
{{bginfo|The ''[[Star Fleet Technical Manual]]'' states that the original bridge was rotated 36&deg; port, which would have the turbolift shaft travel down the center-line of the saucer section. The ''Technical Manual'' gives no reason for this offset. With artificial gravity limiting any sense of momentum and electronic displays instead of windows, there may have been no reason for the bridge crew to face directly forward.|According to production designer Matt Jefferies, dramatic necessity required the turbolift to be moved from its planned center-line position (as seen on the ''Enterprise'' model). This offset placement allowed characters to walk onto the bridge and enter scenes without being blocked by actors sitting in the command chair.}}
  +
  +
The bridge of the ''Constitution''-class starships were subject to many minor and major cosmetic changes over their many years of service. In particular, the main bridge of the USS ''Enterprise'' seems to have undergone considerable changes in appearance. In the late [[2260s]], along with the added turbolift, the bridge design changed from a segmented flat-panel peripheral station configuration to a completely circular design, including curved overhead view screens, and railings and steps which matched the arc of the circumference. At the same time, an [[automatic bridge defense system]] was also installed that obscured the translucent overhead dome, which did not return until the [[Galaxy class#Main bridge|''Galaxy''-class bridge]]. ({{TAS|Beyond the Farthest Star}}) This marked the beginning of major changes to come which would utilize the updated substructure and, most notably, its systems were fully upgraded along with the refit of the early 2270s. ({{film|1}})
  +
  +
The bridge underwent only a few minor modifications from that point until the destruction of the ship in [[2285]]. The bridge of the {{USS|Enterprise|NCC-1701-A|-A}}, commissioned one year later (in [[2286]]), had mainly cosmetic differences at launch, but by [[2287]], it had been drastically upgraded to reflect the advances made in computer control technology. {{incite|Was this reason given in dialogue?}} The bridge module had again been replaced {{incite|Source beyond the TNG TM is needed to show that the bridge is modular and was replaced rather than remodeled}} by [[2293]]. The lighter color scheme of the original ''Enterprise''-A bridges had made room for a darker, more militaristic look. ({{film|2}}; {{film|4}}; {{film|5}}; {{film|6}})
  +
  +
{{bginfo|The controls that were seen in the fifth movie were designed to reflect a change towards a more "TNG-control" solid-state style. However, in the sixth movie, the controls had been redesigned to a more "push button-tactile-response" design.}}
  +
  +
=== Officers' lounge ===
  +
[[File:Constitution class refit lounge.jpg|thumb|Officers' lounge privacy area on a ''Constitution''-class vessel of the refit lineage]]
  +
Located at the stern of Deck 2 aboard the refit configuration ''Constitution''-class starship was the officers' lounge. Here, four huge view ports afforded a spectacular view of the ship's warp nacelles and space beyond. {{incite}}
  +
  +
To the sides, small plant areas held flora from several worlds and a small pool featured freshwater tropical fish. Just forward of this section of the lounge were two privacy areas. In each privacy area, a view screen was mounted into the wall, providing a full exterior tour of the vessel. {{incite|The above paragraph seems to be based mostly on Mr. Scott's Guide.}} ({{film|1}})
  +
{{clear}}
  +
  +
=== Recreational facilities ===
  +
[[File:Constitution class original recreation.jpg|thumb|left|A typical recreation room (2260s)]]
  +
[[File:Constitution class refit recreation.jpg|thumb|Recreation room (refit configuration, 2270s)]]
  +
Aboard the original ''Constitution''-class starships, there were at least six recreation rooms, which included [[three-dimensional chess]] and card game tables. There was also a [[Recreation room|holographic rec room]], which was the predecessor of the [[holodeck]]. Also aboard were an [[arboretum]], [[galley]], [[gymnasium]], a [[bowling alley]], a theater, and a [[chapel]]. ({{TOS|Charlie X|The Naked Time|The Conscience of the King|Is There in Truth No Beauty?}}; {{film|1}})
  +
  +
On the refitted ''Constitution''-class vessels, recreational facilities were further expanded. One large room in the aft section of the starship's saucer section furnished off-duty personnel with a wide variety of recreational games and entertainment. At the front of the room was an immense, wall-mounted viewing screen. Beneath this was an information display alcove; five small screens exhibited a [[Enterprise history|history of selected vessels called ''Enterprise'']]. A raised platform in the center of the lower level floor featured a diversity of electronic entertainment. ({{film|1}})
  +
  +
=== Crew quarters ===
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="1" align="center" | [[File:Michael Burnham in Spock's quarters.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Enterprise quarters, original.jpg|180px]]
  +
|-
  +
| class="even" | <center>[[Crew quarters]] in the 2250s</center>
  +
| class="even" | <center>Crew quarters in the 2260s</center>
  +
|-
  +
| colspan="1" align="center" | [[File:Jonathan Archer (mirror) in a wraparound tunic.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Constitution class refit officers quarters.jpg|180px]]
  +
|-
  +
| class="even" | <center>Senior officers's quarters on an original ''Constitution''</center>
  +
| class="even" | <center>Officers's quarters on a refit configuration ''Constitution''</center>
  +
|}
  +
Crew quarters were located throughout the saucer section &ndash; keeping with [[Starfleet]] tradition, Deck 5 housed the senior officers' quarters. On the refit configuration vessels, these staterooms were quite similar to the VIP units on Deck 4, with only a few differences.
  +
  +
On starships of the original configuration, the officers' quarters featured two areas, separated partly by a wall fragment. One area was allocated as sleeping area, featuring a comfortable bed, and another as work area, including a desk and computer terminal. Entrance to a bathroom was provided through the quarter's sleeping area. Both areas could be configured to personal preference. ({{ENT|In a Mirror, Darkly, Part II}}; {{TOS|The Enemy Within}})
  +
  +
{{bginfo|On the original series, several "different" crew quarters were seen, but always the same set was used, changed by different lighting designs and furniture configuration.}}
  +
  +
On ''Constitution''-class vessels, staterooms of the senior officers were composed of two areas which were separated by a retractable, [[transparent aluminum]] {{incite}} partition. The room's entrance opened into the living area. A library computer terminal and work desk were provided here. The room's corner circular nook, normally occupied by a dining booth, could be modified at the officer's request. {{incite|The modular nook seems to be from Mr. Scott's Guide as well.}}
  +
  +
The other half of the stateroom was a sleeping area, which held a single large bed that could double as a sofa during off-duty relaxation. A transparent door led into the bathroom area. ({{film|1}})
  +
  +
By the [[2290s]], the size of officers' quarters was reduced to one large room and crewmen were housed in dormitories with bunk beds. ({{film|6}})
  +
  +
=== Landing bay and cargo facilities ===
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="1" align="center" | [[File:Galileo approaches USS Enterprise from Vulcan.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Galileo and Columbus on hangar deck.jpg|180px]]
  +
|-
  +
| class="even" | <center>Original configuration, external view</center>
  +
| class="even" | <center>Original configuration, internal view</center>
  +
|-
  +
| colspan="1" align="center" | [[File:Constitution class refit landingbay.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Enterprise-A shuttlebay.jpg|180px]]
  +
|-
  +
| class="even" | <center>Landing bay on a refit configuration vessel</center>
  +
| class="even" | <center>Refit configuration, internal view</center>
  +
|}
  +
Deck 17 was the main access level of the [[engineering hull]]. The aft [[Shuttlebay|landing bay]] provided personnel in small craft with a means of entering or exiting the vessel, as did docking port on either side of the level.
  +
  +
The original configuration of the ''Constitution''-class carried a standard complement of 4 [[shuttlecraft]], some of which were [[Class F shuttlecraft|Class F]]. ({{TOS|The Omega Glory}})
  +
  +
{{bginfo|This may have varied per ship, as while the {{USS|Exeter|NCC-1672}} was specifically stated to just have four, the {{USS|Enterprise|NCC-1701}} was seen with one Class F and three other shuttles in its shuttlebay in {{TAS|Mudd's Passion}}. The same ship was also seen to have at least two Class F shuttles earlier in {{TOS|The Galileo Seven}}, so its shuttle configuration may have varied over time as well.}}
  +
  +
The refit configuration ''Constitution''-class starship featured a new landing bay design. A wide range of [[Starfleet]] and [[Federation]] craft could utilize this state-of-the-art landing facility. Alcoves on either side of the landing bay provided storage for up to six standard [[Work Bee]]s, and furnished all necessary recharging and refueling equipment. Additional space was available for the storage of non-ship shuttlecraft. {{incite|Seems to be from Mr. Scott's Guide}}
  +
  +
Just within the landing bay doors was a [[force field]] generator unit, which was built into the main [[bulkhead]]s on either side of the entry area. This field allowed craft to enter the ship, while at the same time retaining the atmosphere and temperature within the landing bay. {{incite|Mr. Scott's Guide?}}
  +
  +
Deck 18, the refit configuration shuttlecraft hanger bay, was situated at the widest point of the engineering hull. Much of the deck consisted of open space, as it was the mid-level of the cargo facility; thirty-two cargo pod modules could be stored in the alcoves lining the forward, port, and starboard sides of the bay. {{incite|Mr. Scott's Guide?}}
  +
  +
The shuttle hangar had sufficient room for the storage of four craft at any given time. During normal storage situations, these shuttlecraft faced aft. {{incite|Mr. Scott's Guide?}}
  +
  +
This deck also housed the vessel's lifeboat facilities. These one-man craft, which escaped through blow-away panels in the side of the secondary hull, were provided for those persons were unable to reach the primary hull in case of an emergency. {{incite|I think the lifeboat entries were seen in TMP, but the details about them appear to come from Mr. Scott's Guide.}} ({{film|1}})
  +
  +
==== Airlocks ====
  +
[[File:Constitution class refit airlock.jpg|thumb|left|Airlock staging area in the [[2270s]]]]
  +
Refit ''Constitution''-class starships possessed a number of airlocks permitting direct physical access to the ship. One was located at the aft of Deck 1 on top of the saucer section. ({{film|1}})
  +
  +
Yet another was located on the ventral port-side saucer section, concealed by sliding hull plates. It was accessed through a staging area. ({{film|1}}) Four spacesuit lockers lined one wall, each containing one suit, providing enough to clothe a standard party of four. A small, locked arms cabinet held phasers; communicators, [[tricorder]]s, translators, and outerwear were contained in a separate cabinet on another wall. {{incite|This info seems to be from Mr. Scott's Guide}}
  +
{{bginfo|An identical set of doors was located on the starboard side; most published blueprints suggest yet another docking port here as well.}}
  +
  +
The next set of airlocks were located on the port and starboard sides of the torpedo bays. The final set were located on the port and starboard sides of the secondary hull at the midline. ({{film|1}}; {{film|2}}) These airlocks opened into the ship's main cargo bay. There was also a "gangway"-style airlock on the port edge of the saucer section. ({{film|1}})
  +
  +
{{bginfo|The presence of a similar "passageway" visible in the Tholian drydock holding the USS ''Defiant'' suggests that it was a feature of the pre-refit ''Constitution''-class as well. ({{ENT|In a Mirror, Darkly}})}}
  +
  +
Located on the upper surface of the saucer section of the refitted ''Enterprise'' were numerous small hatches used for entrance and egress during extra-vehicular activities. (Kirk, Spock, Decker, McCoy, and the Ilia probe used one of these hatches to leave the ship when they arrived at ''[[V'Ger]]''{{'}}s "core".) ({{film|1}})
  +
  +
=== Main engineering ===
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="2" align="center" | [[File:USS Enterprise Main engineering 2250s.jpg|360px]]
  +
|-
  +
| colspan="2" class="even" | <center>USS Enterprise main engineering, 2250s</center>
  +
|-
  +
| colspan="1" align="center" | [[File:Constitution original engineering2.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Constitution original engineering.jpg|180px]]
  +
|-
  +
| class="even" | <center>main engineering, [[2266]]</center>
  +
| class="even" | <center>main engineering, [[2268]]</center>
  +
|-
  +
| colspan="1" align="center" | [[File:Constitution class warp core, 2269.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Main engineering, dilithium chamber.jpg|180px]]
  +
|-
  +
| class="even" | <center>main engineering, [[2269]]</center>
  +
| class="even" | <center>[[Dilithium chamber]] in engineering in 2269</center>
  +
|-
  +
| colspan="1" align="center" | [[File:Constitution class refit engineering.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Constitution Engineering.jpg|180px]]
  +
|-
  +
| class="even" | <center>Refit configuration main engineering, [[2270s]]</center>
  +
| class="even" | <center>...and its upper engineering level, 2290s</center>
  +
|}
  +
[[Main engineering]] was from where the ship's warp was controlled. All thrust and power systems were primarily controlled from this site, and it is also where the main dilithium crystal reactor was located. Life support was controlled separately from Deck 6. ({{TOS|The Ultimate Computer|The Corbomite Maneuver|The Naked Time|The Enemy Within|The Conscience of the King}}, {{e|Day of the Dove}})
  +
  +
During the [[2270s]] ''Constitution''-class refit, the interior design of the engineering section was drastically upgraded, featuring the vertical [[warp core]] and the horizontal intermix area.
  +
  +
Main engineering was lodged on Decks 14 and 15. Deck 14 was the uppermost level of the engineering hull, and was the anchoring framework for the connecting dorsal and the warp nacelle pylons. {{incite}}
  +
  +
On the forward end of the deck was the engineering computer monitoring room, which encircled the cortical intermix shaft and opens, to the rear, into the engineering computer bay. {{incite}}
  +
  +
Deck 15 housed the main engineering room. Located in the center of the room, and extending for many levels both above and below the deck, was the [[warp core]]. This complex, radically new design in intermix technology, provided operational power for the impulse drive system and furnished enough additional energy to power all other shipboard systems. {{incite}}
  +
  +
Both matter and antimatter for this chamber were contained in a series of magnetic bottles, which were housed in pods at the base of the intermix shaft. {{incite|Much of the above technical detail seems to be from Mr. Scott's Guide and production artwork, but I could be mistaken and there may have been on-set graphics with this info.}} ({{film|1}})
  +
  +
== Ships commissioned ==
  +
{| width="100%" |
  +
| valign="top" width="50%" |
  +
;Certain<sup>[[#footnote 6|6]]</sup>:
  +
* [[NCC-1700]] <!--USS Constitution-->
  +
* {{USS|Ahwahnee|NCC-2048}} (NCC-2048)
  +
* {{USS|Constellation|NCC-1017}} (NCC-1017)
  +
* {{USS|Defiant|NCC-1764}} (NCC-1764)<sup>[[#footnote 7|7]]</sup>
  +
* {{USS|Eagle|}} (NCC-956)
  +
* {{USS|Emden}} (NCC-1856)
  +
* {{USS|Endeavour|NCC-1895}} (NCC-1895)
  +
* {{USS|Enterprise|NCC-1701}} (NCC-1701)
  +
* {{USS|Enterprise|NCC-1701-A}} (NCC-1701-A)
  +
* {{USS|Excalibur|NCC-1664}} (NCC-1664)
  +
* {{USS|Exeter|NCC-1672}} (NCC-1672)
  +
* {{USS|Hood|NCC-1703}} (NCC-1703)
  +
* {{USS|Intrepid|NCC-1631}} (NCC-1631)<sup>[[#footnote 8|8]]</sup>
  +
* {{USS|Korolev}} (NCC-2014)
  +
* {{USS|Lexington|NCC-1709}} (NCC-1709)
  +
* {{USS|Potemkin|NCC-1657}} (NCC-1657)
  +
; Alternate
  +
* {{ISS|Enterprise|NCC-1701| (NCC-1701)}} (in the [[mirror universe]])
  +
* {{USS|Enterprise|NCC-1701| (NCC-1701)}} (in an [[alternate timeline]])
  +
| valign="top" width="50%" |
  +
;Unnamed
  +
* [[Constitution unnamed 000|Unnamed ''Constitution''-class starships]]
  +
;Fictional
  +
*{{USS|Ravenous}}
  +
;Uncertain<sup>[[#footnote 9|9]]</sup>:
  +
* [[NCC-1685]]
  +
* [[NCC-1697]]
  +
* [[NCC-1718]]
  +
* [[NCC-1831]]
  +
* {{USS|Carolina|23rd century}}
  +
* {{USS|Farragut|23rd century}}
  +
* {{USS|Kongo}} (NCC-1710)
  +
* {{USS|Merrimac|NCC-1715}} (NCC-1715)
  +
* {{USS|Olympia}}
  +
* {{USS|Republic}} (NCC-1371)
  +
* {{USS|Valiant|23rd century}}
  +
* {{USS|Yorktown|23rd century}}<sup>[[#footnote 10|10]]</sup>
  +
|}
  +
  +
== Appendices ==
  +
=== See also ===
  +
* [[Constitution class decks|''Constitution''-class decks]]
  +
* {{Class|Enterprise}}
  +
  +
=== Appearances ===
  +
The ''Constitution''-class ''Enterprise'' appeared in every episode of [[TOS]] and [[TAS]], except for {{e|The Slaver Weapon}}. Episodes featuring other ''Constitution''-class vessels, or the ''Enterprise'' for other series, are listed below.
  +
<div class="appear">
  +
* {{TOS}}
  +
** {{e|Court Martial}} {{small|(remastered version only)}}
  +
** {{e|The Doomsday Machine}}
  +
** {{e|The Ultimate Computer}}
  +
** {{e|The Omega Glory}}
  +
** {{e|The Tholian Web}}
  +
* {{Star Trek films}}:
  +
** {{film|1}}
  +
** {{film|2}}
  +
** {{film|3}}
  +
** {{film|4}}
  +
** {{film|5}}
  +
** {{film|6}}
  +
** {{film|7}} {{small|(painting)}}
  +
** {{film|8}} {{small|(model)}}
  +
** {{film|10}} {{small|(model)}}
  +
* {{TNG}}
  +
** {{e|The Naked Now}} {{small|(display graphic)}}
  +
** {{e|Lonely Among Us}} {{small|(model)}}
  +
** {{e|The Battle}} {{small|(model)}}
  +
** {{e|Hide and Q}} {{small|(model)}}
  +
** {{e|Haven}} {{small|(model)}}
  +
** {{e|The Big Goodbye}} {{small|(model)}}
  +
** {{e|The Neutral Zone}} {{small|(model)}}
  +
** {{e|The Bonding}} {{small|(model)}}
  +
** {{e|Booby Trap}} {{small|(model)}}
  +
** {{e|The Best of Both Worlds, Part II}} {{small|(wreckage)}}
  +
** {{e|The First Duty}} {{small|(model)}}
  +
** {{e|Relics}} {{small|(holographic recreation of bridge)}}
  +
* {{DS9}}
  +
** {{e|Homefront}} {{small|(model)}}
  +
** {{e|Paradise Lost}} {{small|(model)}}
  +
** {{e|Trials and Tribble-ations}}
  +
** {{e|What You Leave Behind}} {{small|(corridor in montage scene)}}
  +
* {{VOY|In the Flesh}} {{small|(wall display, original and refit)}}
  +
* {{ENT}}
  +
** {{e|In a Mirror, Darkly}}
  +
** {{e|In a Mirror, Darkly, Part II}}
  +
** {{e|These Are the Voyages...}} {{small|(archive footage)}}
  +
* {{DIS}}
  +
** {{e|Despite Yourself}} {{small|(display graphic)}}
  +
** {{e|Will You Take My Hand?}}
  +
** {{e|Brother}}
  +
** {{e|If Memory Serves}} {{small|(archive footage)}}
  +
** {{e|Such Sweet Sorrow}}
  +
** {{e|Such Sweet Sorrow, Part 2}}
  +
* {{PIC|Maps and Legends}} {{small|([[Hologram|holographic]] image)}}
  +
* {{ST}}
  +
** {{e|Q&A}}
  +
** {{e|The Trouble with Edward}}
  +
** {{e|Ask Not}}
  +
** {{e|Ephraim and Dot}}
  +
* {{LD}}
  +
** {{e|An Embarrassment Of Dooplers}} {{small|(photograph)}}
  +
</div>
  +
  +
=== References ===
  +
*{{DIS|Lethe}}
  +
  +
=== Background information ===
  +
For information on the origin of the ''Constitution''-class designation, please see {{class|Starship}}.
  +
  +
==== Interiors ====
  +
For information on the ''Constitution''-class interior sets, please see [[Constitution class sets|''Constitution''-class sets]].
  +
  +
==== Registry number ====
  +
Apart from designing the ship, Art Director [[Matt Jefferies]] was also responsible for conceiving its original, famous [[registry]] number "[[NCC]]-1701". As he explained, "''Since the 1920's [sic], N has indicated the United States in Navy terms, and C means 'commercial' vessel. I added an extra C just for fun. Interestingly, Russia's designation is CCC. So The N and C together made it kind of international. After that, I had to pick some numbers. They had to be easily identifiable from a distance, so that eliminated 3, 8 , 6, 9 and 4-none of which is that clear from a distance, That didn't leave much! So 1701 was as good a choice as any. The reason we gave for the choice afterwards was that the "''Enterprise''" was the 17th major design of the Federation, and the first in the series. 17-01!''" (''[[Star Trek: The Original Series Sketchbook]]'', p. 62), "''(&hellip;) which, incidentally and coincidentally, happens to be very close to the license number on my airplane &ndash; NC-17740. But I have never really stepped out and squashed the rumor that the number on the "''Enterprise''" came off my airplane.''" ({{STTM|1|10|26}})
  +
  +
====Saucer separation====
  +
A [[saucer separation]] capability for the ''Constitution''-class was suggested as early as the [[TOS Season 2|second season]] of the ''Original Series'' in the original script of its episode {{e|The Apple}}, but was never produced as no ''Original Series'' script has ever actually called for one. The capability was however envisioned by the producers, "''Designed to operate separately from the rest of the ship, the saucer therefore contains all elements necessary for independent operation.''" (''The Making of Star Trek'', p. 171) The intent made it even into the official series' internal writer's guide, ''The Star Trek Guide'' (third revision, page 15 of the supplement and generally dubbed the "''Writer's Bible''"), where the saucer section was described to be "''in fact a completely self-sustaining unit which can detach itself from the galaxy drive units and operate on atomic impulse power for short range solar system exploration.''" {{el|leethomson.myzen.co.uk/Star_Trek/1_Original_Series/Star_Trek_TOS_Writer's_Guide.pdf}}
  +
  +
The original saucer separation intent was reconfirmed years later on two occasions, when efforts were underway to revitalize the live-action franchise. Production Illustrator for ''[[Star Trek: Planet of Titans]]'', [[Ralph McQuarrie]], stated on several of the concept drawings he had created for a newly conceived ''Enterprise'', "''The saucer of the ''Enterprise'' (which was detachable) ends up in the shroud. They meet the aliens and had a dramatic finale. These two images are of the ''Enterprise'' saucer in the shroud. (&hellip;) The disc of the ''Enterprise'' would separate from the rest of the ship to land on the surface of planets.''" {{el|filmsketchr.blogspot.nl/2011/12/warp-back-in-time-to-lost-star-trek.html#.UFcksFFTa-n}} The sketches McQuarrie referred to, of the independently operating saucer section, were published in ''[[The Art of Ralph McQuarrie]]'' (pp. 124-129). The second occasion occurred when ''[[Star Trek: Phase II]]'' Producer [[Robert Goodwin]] reported in a progress memo dated {{d|8|September|1977}}, "''Meanwhile we're having a new model of the ''Enterprise'' constructed, with the added bonus of a saucer section which can separate from the engine nacelles, should such a maneuver be a necessary part of some story. This capacity of the ''Enterprise'' was described in ''The Making of Star Trek'', although it was never utilized in the first series.''" (''{{dis|Starlog|magazine}}'', issue 11, p. 39)
  +
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="1" align="center" | [[File:Probert separation 2.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Probert separation 1.jpg|180px]]
  +
|-
  +
| colspan="2" class="even" | <center>Probert's ''The Motion Picture'' saucer separation concept</center>
  +
|}
  +
Yet another saucer separation sequence was envisioned by [[Andrew Probert]] in 1979 when script treatments for ''Phase II''{{'}}s successor, ''The Motion Picture'', were in flux. During a lull in script development Probert came up with an alternative scene in which ''[[V'Ger]]'' releases a [[Klingon]] {{class|K't'inga}} [[battle cruiser]]. Upon re-materialization the Klingons true to their nature immediately attack the ''Enterprise''. During the battle Kirk is forced to perform a maneuver akin to that of [[William T. Riker]] in {{e|The Best of Both Worlds, Part II}}. [[Douglas Trumbull]] liked the idea and had Probert draw up color storyboards to show the sequence. Some of the storyboards were published in {{STTM|1|22|132}}, and in ''[[The Art of Star Trek]]'', pages 198-199. Probert's concept was not entirely a flight of fancy as the actual studio model, in line with Goodwin's prior memo annotation, was constructed in such a way that a saucer separation could easily be filmed if the need arose &ndash; contrary to the ''Original Series'' filming model, which was not. ({{tngc|3|9}}) Probert himself remarked in this regard, "''The ''Enterprise'' was always designed to separate from the Engineering section. I knew about this when I did ''Star Trek: The Motion Picture''. And if you look at the bottom of Kirk's ''Enterprise'' ''[note: original configuration]'', you'll notice two triangular items, which are two of the landing feet for the saucer. Regardless of whether it was Matt Jefferies' original intention or not, it's sort of the way that "Trekdom" or "''Star Trek'' lore" has labeled those features. So taking my cue from that for ''Star Trek: The Motion Picture'', I placed four landing legs in the bottom of the ''Enterprise'' and created a very specific separation line on the dorsal.''" (''[[Star Trek: The Next Generation USS Enterprise NCC-1701-D Blueprints]]'', booklet, p. 8)
  +
  +
==== Size ====
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="2" align="center" | [[File:Constitution-class USS Enterprise NCC-1701 finalized plan views by Matt Jefferies.jpg|360px]]
  +
|-
  +
| colspan="2" | <center>Jefferies' detailed size plan views he created for AMT</center>
  +
|-
  +
| colspan="1" align="center" | [[File:D7-class and Enterprise scale drawings.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Constitution-D7 class comparison.jpg|180px]][[File:Constitution-D7 class comparison 2.jpg|180px]]
  +
|-
  +
| class="even" | <center>Jefferies' size comparison graphics production art…</center>
  +
| class="even" | <center>…as featured in "The Enterprise Incident"</center>
  +
|}
  +
The dimensions of the ''Constitution''-class, 947 feet (289 meters) long for the original configuration and 1,000 feet (305 meters) for the refit-configuration, are the ones that are universally accepted by production staff and fans alike, and propagated in virtually all [[reference works]] dealing with the subject, starting with the very first one, ''[[The Making of Star Trek]]'', published in 1968. That being said and oddly enough, neither dimension has actually ever been [[canon]]ically confirmed, as neither dimension was ever seen or referred to in any of the live-action ''Star Trek'' productions until 2019.
  +
  +
The original configuration length of 947 feet was first derived from [[Stephen Edward Poe]]'s [[reference book]], ''[[The Making of Star Trek]]'', p. 178, and that dimension has been propagated in every subsequent reference work ever since. However, what Poe did not mention was that designer Matt Jefferies had originally produced that graphic in 1967 as a reference for Poe's employer, [[Star Trek model kits|model kit]] company [[Aluminum Metal Toys]] for their 1968 second edition retooled USS ''Enterprise'' model kit, No. S951 &ndash; where the graphic was displayed on the side of the box prior to its publication in the book &ndash; and not for the actual ''Original Series'' production. Remarkably, the dimension of the starship had been in flux until that time as producer [[Gene Roddenberry]]'s memo of 24 August 1964 evidenced, "''We anticipate a final design might see the ship as 200 feet in length, and thus even a 1&frac12;-inch scale would give us quite a huge [[Studio model|miniature]].''" This figure, initially accompanied with a crew complement of 203 would actually more or less stand until Jefferies, utilizing his engineering background, recalculated the figures for his design three years later. (''[[The Making of Star Trek]]'', pp. 89, 134)
  +
  +
The original configuration ''Constitution''-class length came closest to canon, when two ship size comparison graphics were featured in the ''Original Series'' [[TOS Season 3|third season]] episode {{e|The Enterprise Incident}}. The two computer console graphics, also created by Jefferies, showed a ''Constitution''-class vessel in comparison with a [[Romulan]] {{class|D7}} [[battle cruiser]] and an in the episode barely discernible yardstick. Yet, careful measurement of the production art of the graphic, using the featured yardstick, measured the ''Constitution''-class vessel actually at exactly 900 feet (274 meters). Jefferies later sold his original plan view design art, including that for AMT, in the [[Profiles in History]] ''[[The Star Trek Auction]]'' of 12 December 2001, in order to raise funding for the {{w|Motion Picture & Television Fund}} charity.
  +
  +
Likewise, the 1,000 feet length of the refit-''Constitution''-class was never canonically established on screen either, instead generally gleaned from the 1991 reference book, ''[[Star Trek: The Next Generation Technical Manual]]'', where it was propagated to the public at large. The ''Manual'' itself was based on the internal document ''[[Star Trek: The Next Generation Writers' Technical Manual]]'' in which Andrew Probert had provided dimensions for most of the more prominent Starfleet vessels until then established in the live-action franchise. In fact, it was Probert himself who took the initiative to introduce the new dimension when he co-designed the refit-''Enterprise'' for ''The Motion Picture'', "''I wanted to actually go larger on the size of the ship, not realizing at the time that the Enterprise was originally in drydock for a refitting. [[Richard Taylor|Richard]] felt we should stay with the proportions that we had inherited from Matt Jefferies and [[Joe Jennings]], when they'd designed it for ''[[Star Trek: Phase II]]''. So with that as our starting basis. I lengthened the ship to a thousand feet, just a few feet longer than it was, and enlarged the saucer, eventually adding an updated superstructure to the top and bottom of it.''" {{el|trekplace.com/ap2005int01.html}}
  +
  +
In turn, Visual Effects Art Director [[Nilo Rodis]] adopted Probert's dimension as a yardstick for the multitude of newly-introduced starships designs on the size comparison production art, he had created for {{film|3}}, published in a ''[[Cinefantastique]]'' article (Vol 17 #3/4, 1987, p. 77) almost a decade later, and where the size was actually disclosed to the general public for the very first time. This was not a whimsical act on Rodis' part; since studio models were almost never build in scale to each other, visual effects compositors at [[Industrial Light & Magic]] needed some sort of a reference dimensional framework in order for them to take the relative sizes of the newly designed ships into account, when editing their ship effects footage if more that one appeared in a shot, for the interior [[Earth Spacedock]] scenes in particular. Rodis' dimensions for the new ships (and spacedock) were reciprocally adopted by Probert for the later ''Writer's Technical Manual''.
  +
  +
==== Studio models ====
  +
For information on the ''Constitution''-class [[studio model]]s, please see:
  +
*[[Constitution class model (original)|''Constitution''-class model (original)]]
  +
*[[Constitution class model (refit)|''Constitution''-class model (refit)]]
  +
*[[Constitution class model (retcon)|''Constitution''-class model (retcon)]]
  +
  +
==== Deleted Scene ====
  +
[[File:USS Biddeford, Constitution class.jpg|thumb|Original configuration ''Constitution''-class in the alternate reality]]
  +
A [[deleted scene]] from {{film|12}} featured a model of a ''Constitution''-class starship, the {{USS|Biddeford}} with the unusual registry NCC-0718, in the office of {{alt|Alexander Marcus}}. Since the featured [[alternate reality]] [[Constitution class (alternate reality)|''Constitution''-class]] is markedly different in design &ndash; a refit-version if you will, had the scene been included &ndash; , it is unclear whether this would have implied the prime original configuration ''Constitution''-class also existed in the alternate reality, albeit with apparently far lower registries. However, since production sources proceeded from a mid-2220s class launch (''see below''), the existence of prime universe versions of one or more ''Constitution''-class vessels in the alternate reality is therefore actually not in violation with established continuity as proceeded from, as the latter was only created in 2233 &ndash; before prime universe ''Enterprise'' was launched &ndash; , also accounting for the low registry of ''Biddeford'' (see also in this regard: ''[[Federation starship classes#Background information|Federation starship classes: Background information]]'').
  +
  +
=== Footnotes ===
  +
{{anchor|footnote 1}}<sup>1</sup> In {{e|The Cage}} (set in [[2254]]), Pike claims to be responsible for 203 lives. In {{e|Brother}} (set in [[2257]]), scans show 203 crew members which is explicitly called the vessel's entire complement. However, a [[:File:Enterprise's file.jpg|display graphic]] featured in the same episode specifically states that the crew complement is 430 (43 [[officer]]s, 387 [[enlisted]]). This is the implied number of personnel of the ship in {{e|The Ultimate Computer}} (set in [[2268]], during a later [[five-year mission]]). The 203 crew count originated from Gene Roddenberry's original March 1964 ''[[Star Trek is...]]'' pitch (p. 9), whereas he had revised the number upwards to 430, "approximately one-third of them female", in the 17 April 1967 third draft of what was now the ''The Star Trek Guide'' (p. 7), famed in later ''Star Trek''-lore as the "The Writer's Bible". The latter number was adopted by Franz Joseph for his 1975 ''Technical Manual'', whose "Class I Heavy Cruiser – Constitution Class Starships" specifications in turn became the source for most of these seen on the "Brother" graphic display, thereby ''de facto'' elevating the hiterto conjectural specifications to canon.
  +
  +
{| class="wiki-sidebar"
  +
|-
  +
| colspan="1" align="center" | [[File:Constitution primary phaser.jpg|180px]]
  +
| colspan="1" align="center" | [[File:Technical journal.jpg|180px]]
  +
|-
  +
| class="even" | <center>First ''Constitution''-class designation mention, in a phaser technical diagram for "Space Seed"…</center>
  +
| class="even" | <center>…as ultimately read by Scotty in "The Trouble with Tribbles"…</center>
  +
|-
  +
| colspan="2" align="center" | [[File:Scott examining a Constitution class diagram.jpg|360px]]
  +
|-
  +
| colspan="2" | <center>…and on a diagram in ''The Undiscovered Country''</center>
  +
|}
  +
{{anchor|footnote 2}}<sup>2</sup> The launch date of the class (for the Starship vs. ''Constitution''-class dichotomy, please refer to: [[Starship class#Background information|Starship-class background information]]) has never been established, but the [[reference book]] ''[[The Making of Star Trek]]'' stated on page 203 that the producer's intent was that the "''Enterprise''-class starships have been in existence for about forty years." Its author [[Stephen Whitfield]], who had full access to production sources, wrote the book during the production of season two, narrowing the class launch window down to the mid-2220s. Interestingly, this meant that the ''Enterprise'' was a relative latecomer into the class, as its launch year was generally understood, but not firmly established, to be 2245 by production staffers and as was propagated in numerous reference books afterwards. [[Greg Jein]] in his influential "[[The Case of Jonathan Doe Starship]]" article also proceeded from this understanding and, taking his cue from the "MK IX/01" annotation on the technical journal graphic [[Montgomery Scott]] was reading in {{e|The Trouble with Tribbles}}, postulated the ship to be of a newer "MK IX" subclass, with the USS ''Constitution'' ([[NCC-1700]]) as its (sub-)class vessel, in the process trying to make sense of the lower registry numbers by postulating them to belong to older subclasses. Jein postulated the ''Enterprise'' as the second MK IX subclass member, hence the justification of the "01" addition to both the registry "NCC-17" and the technical journal graphic as seen, the reasoning adopted by the original registry designer, Matt Jefferies, as he himself had stated above. {{el|trekplace.com/article10.html}} It was not until the ''Discovery'' episode "Brother" that the launch year of ''Enterprise'' was confirmed in canon on a [[:File:Enterprise's file.jpg|graphic display]].
  +
  +
{{anchor|footnote 3}}<sup>3</sup> There may only be twelve ''Constitution''-class ships as of the first season episode {{e|Tomorrow is Yesterday}}, but the line this was drawn from ("there are only twelve like it in the fleet") has given rise to speculation that the ''Enterprise'' should be excluded from the count, meaning there could be thirteen ''Constitution''-class ships as of that date. The twelve ship assertion was actually supported by production sources, as ''The Making of Star Trek'' (pp. 163, 203) clearly stated that, as far as the production staff was concerned, the intent was that there were twelve operational ships of the class foreseen for the second season by the time of its production, the ''Enterprise'' included and taking into account the two ships, {{USS|Valiant|23rd century}} and {{USS|Farragut|23rd century}}, already established as being destroyed in the first season episode {{e|A Taste of Armageddon}}, and already foreseen as mentioned destroyed in the second season episode {{e|Obsession}}, respectively. Kirk's statement then neatly corresponded with the twelve ship assumption; two, the ''Farragut'' and ''Valiant'', presumed destroyed before the remark, with the {{USS|Constellation|NCC-1017}} (in "The Doomsday Machine", and already accounted for by [[D.C. Fontana]] in her memo version, though it was still in operation at the time of "Tomorrow is Yesterday" canonically) and {{USS|Intrepid|NCC-1631}} (in "The Immunity Syndrome") being destroyed after the remark. It should be noted that the inclusion of the ''Valiant'' was a late addition and that it was not even considered in the first two proposals. This, canonically speaking at least, constituted somewhat of a conundrum, an observation not lost on Greg Jein, as he had noted that the ship in question was already destroyed in 2217, whereas the ''Constitution''s only became operational a decade later as far as was established by the producers. {{el|trekplace.com/article10.html}} While another, new ship would have made more sense, the intent of the producers was clear, the class was retro-applied to the lost ship. Yet, the twelve ship statement only held true under the supposition that the ''Defiant'' &ndash; not foreseen by the producers &ndash; had not yet been commissioned, which is open to debate; otherwise, and this was implied by the fact that the ship was already fully operational less than a year later, the thirteen ship number became valid. And indeed, this only became firmly established &ndash; and thus canon &ndash; when ''Defiant'' was in dialog mentioned operational as early as [[2256]] in the 2018 ''Discovery'' episode {{e|Despite Yourself}}, meaning that ''Defiant'' was not even a recent class addition, but actually one of the older class vessels, its highest onscreen established ''Original Series''-era registry, as devised by Jein, notwithstanding. The teleplay writers for {{ENT|In a Mirror, Darkly}} on the other hand, had already adopted Jein's reasoning with the inclusion of a script note in the final draft script which read, "''We'll suggest the Defiant is a slightly newer vessel than Kirk’s ship; the exterior shows slightly more detail...''".
  +
  +
After some corresponding with suggestions to and fro, the definitive name list of vessels belonging to the, then still called Starship-class, was agreed upon by the producers (dutifully carried over to the decal sheet of [[AMT]]'s 1968 re-issue USS ''Enterprise'' [[Star Trek model kits|model kit]]) at the start of the series' second season, and comprised the following vessels (''The Making of Star Trek'', pp. 164-165):
  +
{| width="100%"
  +
| valign="top" width="33%" |
  +
D.C. Fontana's<ref>Aside from the remarks behind several of the names, Fontana further annotated on her memo,"''Alternates include the names of some famous fighting ships of the past, plus a couple of international variations we might consider, Star Fleet being composed of a united service.''"</ref> proposal 8 August 1967
  +
* ''Enterprise''
  +
* ''Exeter''
  +
* ''Essex''
  +
* ''Excalibur''
  +
* ''Lexington''
  +
* ''Yorktown''
  +
* ''Endeavor''
  +
* ''El Dorado''
  +
* ''Excelsior''
  +
* ''Saratoga''
  +
* ''Constellation'' (destroyed in "Doomsday Machine." Presume she would be replaced by Starfleet)
  +
* ''Hornet''
  +
* ''Wasp''
  +
* ''Farragut'' (mentioned as destroyed in "Obsession")
  +
* ''Hood''
  +
* ''Bonhomme Richard''
  +
* ''Monitor'' or ''Merrimac'', depending upon your loyalties
  +
* ''Tori'' ("bird" [note: in Japanese])
  +
* ''Lafayette''
  +
* ''Ari'' ("lion" [note: in Hebrew])
  +
* ''Krieger'' ("warrior" [note: in German])
  +
| valign="top" width="33%" |
  +
[[Bob Justman]]'s<ref>Justman noted in his memo, "''I think there would be several other candidates, such as ''Saratoga'' and perhaps another English [[Aircraft carrier|carrier]], a {{w|French aircraft carrier La Fayette (R96)|French carrier}}, a Russian carrier and certainly a Japanese carrier ''[note: though the ultimately chosen {{wt|Japanese battleship Kongō|Kongo}} was in reality a World War I and II -era Japanese battleship, as were the British {{w|HMS Hood (51)|HMS ''Hood''}} and Russian {{wt|Russian battleship Potemkin|Potemkin}}, whereas, with the exception of the ''Excalibur'' and the ''Endeavor'', all other by Justman proposed names were those of World War II aircraft carriers, the {{wt|USS Constellation (CV-64)|Constellation}} being an at the time recent US post-war carrier]''. In addition, I think a name ought to be made up that would be of Vulcan origin ''[note: though not adopted, some of Justman's notion was carried over to having the ''Intrepid'' a crew that was almost entirely composed of Vulcans].''"''</ref> proposal 9 August 1967
  +
* ''Enterprise''
  +
* ''Essex''<ref name="almost">Remarkably, the vessel nearly made the final cut as it was already referenced to in first script draft dialogue treatment, dated 30 September 1967, page 64, for the second season episode {{e|Journey to Babel}}, which contained a line having [[Lieutenant]] [[Uhura]] state, "''[[Starfleet Command]] confirms alien attack on the other starships, sir. The enemy was defeated. Starships ''Essex'' and ''Eagle'' suffered heavy damage, but will make base.''" The reference to the ''Essex'' and the ''Eagle'' though, was dropped from the episode as aired, indicating that it was not until after September 1967 that the final list was composed. {{el|trekplace.com/article10.html}} ''Eagle'' however, resurfaced as a class vessel a quarter of a century later in ''The Undiscovered Country'', referenced on the "[[Operation Retrieve]]" briefing charts, courtesy of [[Michael Okuda]].</ref>
  +
* ''Excalibur''
  +
* ''Lexington''
  +
* ''Yorktown''
  +
* ''Endeavor''
  +
* ''Eagle''<ref name="almost"/>
  +
* ''Constellation''
  +
* ''Hornet''
  +
* ''Wasp''
  +
* ''Lafayette''
  +
| valign="top" width="33%" |
  +
Definitive list as utilized at the start of [[TOS Season 2]]
  +
* ''Enterprise''
  +
* ''Exeter''
  +
* ''Excalibur''
  +
* ''Lexington''
  +
* ''Yorktown''
  +
* ''Potemkin''
  +
* ''Republic''
  +
* ''Hood''
  +
* ''Constitution''<ref name="unreferenced">The ''Constitution'' and ''Kongo'' were the only vessels on the final list that have not been referenced to in any form or format in the ''Original/Animated Series'' beyond their inclusion on the list and, obviously, besides the class designation itself.</ref>
  +
* ''Kongo''<ref name="unreferenced"/>
  +
* ''Constellation''
  +
* ''Farragut''
  +
* ''Valiant''
  +
* ''Intrepid''
  +
|}
  +
:''Remarks:''
  +
<references />
  +
  +
{{anchor|footnote 4}}<sup>4</sup> While the ''Discovery'' series has shied away from explaining in canon the in-universe visual configuration differences of ''Enterprise'' between "The Cage" and the ''Original Series'', an attempt was made to do so in the 2019 officially licensed in-universe reference book ''[[Star Trek: The USS Enterprise NCC-1701 & 1701-A Illustrated Handbook]]'', were it was implied that the upgrades were a temporary measure to meet the crisis situation if the ship was called upon to perform as a "last resort" in the war. Page 34 had it stated that "''[m]any of the ''Enterprise''{{'}}s systems had been augmented and enhanced for the mission, to ensure the ship was capable of withstanding any exceptional and extreme conditions in the extreme regions it was exploring,''" continuing to explain the alterations. Page 54 further implied &ndash; rather implausibly, as Kirk's mission was every bit as "exceptional" and "extreme" as Pike's had been &ndash; that these alterations were no longer deemed necessary for the subsequent five-year mission under Kirk, and that the ship was therefore returned to the "The Cage"-era configuration, though some upgrades under Pike were "retained", which included the dispensing with of the "spikes" on the Bussard collector caps and the smaller deflector dish.
  +
  +
{{anchor|footnote 5}}<sup>5</sup> Even though the hologram appearance of the ''Discovery'' redesign in the lobby of [[Starfleet Headquarters]] can easily be construed as a homage to Pike's ship in that particular era, there had been indications that the latter-day ''Star Trek'' producers, responsible for all on-screen ''Star Trek'' from ''Discovery'' onward, consider it the canon replacement for Jefferies' classic design &ndash; that is, in their minds at least. Shortly before its introduction in the [[DIS Season 1|season one]] closing episode {{e|Will You Take My Hand?}}, Executive Producer [[Alex Kurtzman]] indicated,
  +
<blockquote>"Obviously ''[Discovery]'' looks more modern than ''The Original Series'', because we are in a modern world now and if we made the show look that way people would not feel that it was worth the money. That being said, every prop and costume design is filtered through what existed at the time. And do we create the new version of it or do we augment the original design in very subtle ways or do we just leave it alone? And when I say every prop and design choice I mean ''every'' ''[note: "every" emphasized]'' prop and design choice. So, I think you will see a lot of tips of the hat to devices to ''The Original Series'' and the timeline. But, obviously we wanted to create a more modern experience and that necessitated certain adjustments." {{TrekMovie.com|2017/10/06/exclusive-alex-kurtzman-on-pushing-edges-of-canon-and-planting-seeds-for-star-trek-discovery-season-2}}</blockquote>
  +
[[File:Ephraim and the USS Enterprise.jpg|thumb|Kirk's retconned ship in "Ephraim and Dot"]]Shortly after the introduction Production Designer [[Tamara Deverell]] has added more specifically, "''For the Enterprise, we based it initially off of ''The Original Series''. We were really drawing a lot of our materials from that. And then we particularly went to more of the Star Trek movies, which is a little bit fatter, a little bit bigger. Overall, I think we expanded the length of it to be within the world of our Discovery, which is bigger, so we did cheat it as a larger ship.''" {{TrekMovie.com|2018/03/24/7-things-we-learned-about-star-trek-discovery-season-2-at-wondercon-visionaries-panel}} The implied intent had already accrued credence when the redesign appeared as Kirk's ''Original Series'' ship in the {{s|ST}} episode {{e|Ephraim and Dot}} shortly before its holographic reappearance, for all intent and purposes the first actual [[retcon]]ning of the ship in canon &ndash; which, incidentally, was all the more remarkable as the interiors shown in that episode adhered more closely to the ones as seen in ''The Original Series''.
  +
  +
{{anchor|footnote 6}}<sup>6</sup> '''Certain ships''': While most of these ships were already confirmed as class member in the ''Original Series'', even more emphatically reaffirmed in its 2006-2008 [[TOS-R|remastered version]], the classification of others was more tentatively derived. The ''Eagle'', ''Korolev'', ''Emden'', ''Endeavour'', and ''Ahwahnee'', with their respective registry numbers, were all derived from the Operation Retrieve mission charts artwork, seen in the {{DVD|Star Trek VI: The Undiscovered Country|Special Edition| (Special Edition)}} [[DVD]], where they were represented by ''Constitution''-class icons. Michael Okuda, who created the mission charts, indicated they were intended to be of this class,
  +
<blockquote>"If I recall correctly, the charts visible on film/video listed only ship names and registry numbers. One can probably glean some class designations from the ship icons in the diagrams. I don't have the original art handy (I think it's archived on Syquest disks, which I don't have the ability to read, even if I could find the disks themselves), but I recall giving the info to [[Bjo Trimble]], and I'm pretty sure she used most of it in her revised ''[[Star Trek Concordance]]''. I might note that some of the ship registry numbers came from Greg Jein's interpretation of the starship chart in Commodore Stone's office in "Shore Leave" (TOS). Other registry numbers came from Franz Joseph's ''Star Fleet Technical Manual'' or his Starship blueprints. In still other cases, the ships and/or numbers did not come from either source, but were consistent with some fleet status charts I did elsewhere on the ''Enterprise''-A in ''Star Trek VI''. (In other words, there's something that just about everyone will disagree with, but I also hoped that there would be at least something that almost everyone would agree with.) I should also point out that I prepared several charts for the rescue briefing scene, and that not all of them ended up in the final cut of the film. I don't recall which ones were used, or which ones ended up unseen. I do seem to recall that there was at least one chart that had quite a number of registries &ndash; mostly, I recall, from FJ's work &ndash; that ended up unused." {{el|flare.solareclipse.net/ultimatebb.php/topic/6/2739/3.html}}</blockquote>
  +
  +
{{anchor|footnote 7}}<sup>7</sup> The ''Star Fleet Technical Manual'' lists the ''Defiant'' as NCC-1717, though the reference book has since then been considered non-canon and treated as apocryphal by the franchise. On-screen the ship was endowed with the registry number NCC-1764, though it was not discernible in its original appearance in "The Tholian Web".
  +
* '''Registry numbers''': Although the {{ste}} and other reference works provided complete registry numbers for many ''Constitution''-class ships, these numbers were until 2006 at best conjecture. Many of the ''Encyclopedia''{{'}}s numbers were derived from Greg Jein's above-mentioned "The Case of Jonathan Doe Starship" article, which assumed that the list seen on the wall at [[Starbase 11]] in {{e|Court Martial}} were all ''Constitution''s. Yet, once the 2006 remastered version of the series came along, Michael Okuda made use of the opportunity to marry Jein's conjectural registry numbers, where applicable, to their respective ship names, thereby elevating conjecture to canon for those registry numbers, including that of the ''Defiant'', which actually became the first of Jein's registries to be elevated to canon as it had already appeared in "In a Mirror, Darkly", one year before the remastered version came along. Incidentally, the USS ''Intrepid'' (NCC-1631) has only been referenced to in dialog in the original version of ''The Original Series'', but was especially visually retconned into the remastered episode {{TOS-R|Court Martial}}, along with its Jein registry, where it [[:File:USS Intrepid (NCC-1631).jpg|was seen]] orbiting planet [[M-11]].
  +
  +
{{anchor|footnote 8}}<sup>8</sup> An USS ''Intrepid'' (NCC-1707) has nearly made the list as well as it was slated to make an appearance in ''The Voyage Home''. The name was established in dialog whereas registry and class were established in two with dialog corresponding [[LCARS]] graphics that later turned up at {{stala|1779,6984|auction}}. This ''Intrepid'' was mentioned in [[Diane Duane]]'s 1984 novel ''[[My Enemy, My Ally]]'' as the original configuration replacement for the one lost in "The Immunity Syndrome", whereas [[FASA]]'s 1985 ''[[Federation Ship Recognition Manual]]'' (second edition, p. 11) lists the ship in its refit-configuration. {{st-minutiae|resources/scripts/tvh.txt|Scene 27}} wherein this was to be established was however deleted from the film as ultimately released, along with the corresponding graphics which went unused. For further details, see: "[[NCC-1707]]" and "{{USS|Intrepid|2285| (2285)}}".
  +
  +
{{anchor|footnote 9}}<sup>9</sup> '''Uncertain ships''': These ships have been listed in various reference works as ''Constitution''s, but were never canonically established on screen as such, and are therefore of uncertain class. There was another factor to consider &ndash; in the ''Original Series''-era, ships that were identified as starships were automatically considered to be of the Starship-class ship, or in later reference works, the ''Constitution''-type starship. This would account for the inclusion of the USS ''Carolina'' in this list, plus the unnamed ships from the Starbase 11 chart. The ''Farragut'', ''Kongo'', ''Republic'', ''Valiant'', and ''Yorktown'' were from ''The Making of Star Trek'', as discussed above.
  +
  +
{{anchor|footnote 10}}<sup>10</sup> '''USS ''Yorktown''''': Gene Roddenberry suggested that the {{USS|Enterprise|NCC-1701-A|-A}} was first designated as {{USS|Yorktown|23rd century}}, and later recommissioned as USS ''Enterprise''-A, probably because ''Yorktown'' was the original name used in Roddenberry's 1964 [[Star Trek is...|proposal]] pitch to [[NBC]]. Roddenberry felt that it was very unlikely that a brand new ship would have been constructed so fast after the destruction of the original ''Enterprise''. ({{ste|4|2|509}}) Had this became canon, the ''Yorktown'' would have been definitively been established as a ''Constitution''-class vessel, which had been the intent of the ''Original Series'' producers in the first place. It would have also served as a convenient rationale why Scotty had so much trouble getting the ship into operational order in {{film|5}} after the debilitating effects the [[Whale Probe]] inflicted on the ship in the previous outing. The notion of the re-naming was flat-out stated by Michael Okuda as being the case in his ''[[Star Trek: The Next Generation Writers' Technical Manual]]''{{'}}s (2nd edition, p. 6), somewhat toned down in his later published reference works, but emphatically reaffirmed in the even later officially licensed ''[[Star Trek Fact Files]]'' and the 2010 reference book ''[[USS Enterprise Owners' Workshop Manual]]'' (p. 38 and on which Okuda served as the technical consultant). The Starfleet practice of renaming a vessel for a very deserving previous vessel was later canonically established in {{s|DS9}}, when the {{USS|Sao Paulo}} was rechristened USS ''Defiant'' when the original latter was destroyed in the [[Dominion War]]. ({{DS9|The Changing Face of Evil|The Dogs of War}})
  +
*On a side note; The World War II aircraft carrier {{USS|Enterprise|CV-6}} (CV-6), after which Roddenberry named the NCC-1701, was a sister ship of the USS ''Yorktown'' (CV-5), belonging to the same ''Yorktown''-class, the other one being the USS ''Hornet'' (CV-8), a name also considered by the aforementioned staff in an earlier draft of the names list. (''The Making of Star Trek'', p. 164) The three class sisters had their finest hour at the {{w|Battle of Midway}} in 1942, where they operated together, but where the ''Yorktown'' was lost. The ''Hornet'' and the ''Wasp'' (CV-18, a scaled down variant of the ''Yorktown''-class and another name considered by the producers) were lost later in the war, leaving the ''Enterprise'' the sole class survivor. Like its fictional counterpart, the historical ''Enterprise'' has become one of history's most celebrated vessels. Incidentally, the Starfleet renaming practice was carried over from the [[United States Navy]], who introduced the tradition in World War II for its lost in battle aircraft carriers by renaming the later ''Essex''-class carriers after the lost predecessors, and which included ''Enterprise''{{'}}s lost ''Yorktown''-class sisters. ''Enterprise'' herself survived the war, but efforts to preserve her as a museum ship failed and she was scrapped in 1958.
  +
  +
=== Apocrypha ===
  +
==== ''Constitution''-class registry ====
  +
[[File:Star Trek blueprints, sheet 1.jpg|thumb|Joseph's alternatives for the 14 ''Original Series'' "Connies"]]
  +
Although not considered canon, several sources have produced a long list of ''Constitution''-class starships. The main source was Franz Joseph's aforementioned ''Star Fleet Technical Manual'', which listed over one hundred ''Constitution''-class ships divided into subclasses: ''Constitution'', ''Bonhomme Richard'', ''Achernar'', and ''Tikopai''. Ships of the class were later expanded by other publications such as ''[[Ships of the Star Fleet]]'' which included the ''Endeavour'', ''Enterprise'', and ''Enterprise'' (II) subclasses. It should be noted that Joseph incorporated all the ship names the ''Original Series'' producers had originally proposed at the start of the second season, and had only these listed in his ''[[Star Trek Blueprints]]'' companion publication.
  +
  +
<div class="appear">
  +
{| width="100%" |
  +
| valign="top" width="50%" |
  +
*''Constitution''-class ships:
  +
** {{USS|Constitution|NCC-1700}} (NCC-1700)
  +
** {{USS|Constellation|NCC-1017}} (NCC-1017)
  +
** {{USS|Republic}} (NCC-1371)
  +
** {{USS|Enterprise|NCC-1701}} (NCC-1701)
  +
** {{USS|Farragut|23rd century}} (NCC-1702)
  +
** {{USS|Lexington|NCC-1709}} (NCC-1703)
  +
** {{USS|Yorktown|23rd century}} (NCC-1704)
  +
** {{USS|Excalibur|NCC-1664}} (NCC-1705)
  +
** {{USS|Exeter|NCC-1672}} (NCC-1706)
  +
** {{USS|Hood|NCC-1703}} (NCC-1707)
  +
** {{USS|Intrepid|NCC-1631}} (NCC-1708)
  +
** {{USS|Valiant|23rd century}} (NCC-1709)
  +
** {{USS|Kongo}} (NCC-1710)
  +
** {{USS|Potemkin|NCC-1657}} (NCC-1711)
  +
** USS ''Bonhomme Richard'' (NCC-1712)
  +
** USS ''Monitor'' (NCC-1713)
  +
** USS ''Hornet'' (NCC-1714)
  +
** {{USS|Merrimac|NCC-1715}} (NCC-1715)
  +
** {{USS|Endeavour|NCC-1895}} (NCC-1716)
  +
** {{USS|Defiant|NCC-1764}} (NCC-1717)<sup>[[#footnote 4|4]]</sup>
  +
** USS ''Excelsior'' (NCC-1718)
  +
** {{USS|Eagle}} (NCC-1719)
  +
** USS ''Lafayette'' (NCC-1720)
  +
** USS ''Wasp'' (NCC-1721)
  +
** USS ''El Dorado'' (NCC-1722)
  +
** USS ''Ari'' (NCC-1723)
  +
** USS ''Saratoga'' (NCC-1724)
  +
** USS ''Tori'' (NCC-1725)
  +
** USS ''Krieger'' (NCC-1726)
  +
** [[NCC-1697|USS ''Essex'']] (NCC-1727)
  +
** USS ''Constellation II'' (NCC-1728)
  +
** USS ''Farragut II'' (NCC-1729)
  +
** USS ''Intrepid II'' (NCC-1730)
  +
** USS ''Valiant II'' (NCC-1731)
  +
** USS ''[[Achernar]]'' ([[USS John Muir|NCC-1732]])
  +
** USS ''[[Sol]]'' (NCC-1733)
  +
** USS ''[[Jupiter]]'' (NCC-1734)
  +
** USS ''[[Alpha Centauri|Rigil Kentaurus]]'' (NCC-1735)
  +
** USS ''Quindar'' (NCC-1736)
  +
** USS ''Proxima'' ([[USS Lantree|NCC-1737]])
  +
** USS ''Androcus'' (NCC-1738)
  +
** USS ''Astrad'' (NCC-1739)
  +
** USS ''Mondoloy'' (NCC-1740)
  +
** USS ''[[Thelonii|Alfr]]'' (NCC-1741)
  +
** USS ''[[Thelonii]]'' (NCC-1742)
  +
** USS ''[[Xanthii]]'' (NCC-1743)
  +
** USS ''[[Sirius]]'' (NCC-1744)
  +
** USS ''Shahr'' (NCC-1745)
  +
** USS ''Pilar'' (NCC-1746)
  +
** USS ''Tholus'' (NCC-1747)
  +
** USS ''Horok'' (NCC-1748)
  +
** USS ''Ghondr'' (NCC-1749)
  +
** USS ''Pelione'' (NCC-1750)
  +
** USS ''Tali'' (NCC-1751)
  +
** USS ''Annobon'' (NCC-1752)
  +
** USS ''Caspan'' (NCC-1753)
  +
** USS ''Jassan'' (NCC-1754)
  +
** USS ''[[Pagan|Paegan]]'' (NCC-1755)
  +
** USS ''[[Procyon]]'' (NCC-1756)
  +
** USS ''[[Procyon|Phardos]]'' (NCC-1757)
  +
** USS ''Ndele'' (NCC-1758)
  +
** USS ''Zindar'' (NCC-1759)
  +
** USS ''Za'faran'' (NCC-1760)
  +
** USS ''[[Oomaru]]'' (NCC-1761)
  +
** USS ''[[Yaan]]'' (NCC-1762)
  +
** USS ''Temir'' (NCC-1763)
  +
** USS ''Galina'' ([[USS Defiant (NCC-1764)|NCC-1764]])
  +
** USS ''Samaara'' (NCC-1765)
  +
** USS ''Kestral'' (NCC-1766)
  +
** USS ''Kep Salu'' (NCC-1767)
  +
** USS ''Ketoi'' (NCC-1768)
  +
** USS ''Kars'' (NCC-1769)
  +
| valign="top" width="50%" |
  +
** USS ''Sinuiji'' (NCC-1770)
  +
** USS ''Ekinus'' (NCC-1771)
  +
** USS ''[[Dinosaur Planet|Oblik]]'' (NCC-1772)
  +
** USS ''Mengen'' (NCC-1773)
  +
** USS ''Salayna'' (NCC-1774)
  +
** USS ''Qizan'' (NCC-1775)
  +
** USS ''Qual'at'' (NCC-1776)
  +
** USS ''Tulan'' (NCC-1777)
  +
** USS ''Mazda'' (NCC-1778)
  +
** USS ''Esabl'' (NCC-1779)
  +
** USS ''Zaahm'' (NCC-1780)
  +
** USS ''Alferaz'' (NCC-1781)
  +
** USS ''Hajj'' (NCC-1782)
  +
** USS ''Tajarhi'' (NCC-1783)
  +
** USS ''Kasimar'' (NCC-1784)
  +
** USS ''Mongo'' (NCC-1785)
  +
** USS ''Ghar'' (NCC-1786)
  +
** USS ''Pari'' (NCC-1787)
  +
** USS ''Mirazh'' (NCC-1788)
  +
** USS ''Eskiis'' (NCC-1789)
  +
** USS ''Ahzdar'' (NCC-1790)
  +
** USS ''Jenshahn'' (NCC-1791)
  +
** USS ''[[God|Elohim]]'' (NCC-1792)
  +
** USS ''Hiemdal'' (NCC-1793)
  +
** USS ''Maat'' (NCC-1794)
  +
** USS ''[[Shaandra]]'' (NCC-1795)
  +
** USS ''Alam'ak'' (NCC-1796)
  +
** USS ''Behr'ak'' (NCC-1797)
  +
** USS ''Czar'ak'' (NCC-1798)
  +
** USS ''Tutakai'' (NCC-1799)
  +
** USS ''Tikopai'' (NCC-1800)
  +
** USS ''[[K'ushui]]'' (NCC-1801)
  +
** USS ''K'hotan'' (NCC-1802)
  +
** USS ''[[Altair system|Altair]]'' (NCC-1803)
  +
** USS ''[[The Truth Machine|Fomalhaut]]'' (NCC-1804)
  +
** USS ''Nakarat'' (NCC-1805)
  +
** USS ''[[Vega]]'' (NCC-1706)
  +
** USS ''[[Arcturus]]'' (NCC-1807)
  +
** USS ''[[Beta Geminorum|Pollux]]'' (NCC-1808)
  +
** USS ''[[Capella]]'' (NCC-1809)
  +
** USS ''Darion'' (NCC-1810)
  +
** USS ''Sardar'' (NCC-1811)
  +
** USS ''[[Aldebaran]]'' (NCC-1812)
  +
** USS ''Hor'' (NCC-1813)
  +
** USS ''[[Canopus]]'' (NCC-1814)
  +
** USS ''Spica'' (NCC-1815)
  +
** USS ''[[Alpha Centauri|Agena]]'' (NCC-1816)
  +
** USS ''Vena'' (NCC-1817)
  +
** USS ''Acrux'' (NCC-1818)
  +
** USS ''Binar'' (NCC-1819)
  +
** USS ''[[Antares (star)|Antares]]'' (NCC-1820)
  +
** USS ''Anak'' (NCC-1821)
  +
** USS ''[[Betelgeuse]]'' (NCC-1822)
  +
** USS ''Lux'' (NCC-1823)
  +
** USS ''[[Rigel]]'' (NCC-1824)
  +
** USS ''Helios'' (NCC-1825)
  +
** USS ''[[Deneb]]'' (NCC-1826)
  +
** USS ''[[Epsilon Canaris|Adhara]]'' (NCC-1827)
  +
** USS ''[[Alioth]]'' (NCC-1828)
  +
** USS ''[[Alkaid]]'' (NCC-1829)
  +
** USS ''Alnilam'' (NCC-1830)
  +
** USS ''[[Deneb|Arided]]'' (NCC-1831)
  +
** USS ''[[Gamma Orionis|Bellatrix]]'' (NCC-1832)
  +
** USS ''[[Castor]]'' (NCC-1833)
  +
** USS ''[[Dubhe]]'' (NCC-1834)
  +
** USS ''El Nath'' (NCC-1835)
  +
** USS ''Miaplacidas'' (NCC-1836)
  +
** USS ''Mirfak'' (NCC-1837)
  +
** USS ''Murzim'' (NCC-1838)
  +
** USS ''[[Polaris]]'' (NCC-1839)
  +
** USS ''[[Regulus]]'' (NCC-1840)
  +
** USS ''Shaula'' (NCC-1841)
  +
** USS ''Wezen'' (NCC-1842)
  +
|}
  +
</div>
  +
  +
''Ships of the Star Fleet'' substitutes the following for ''Star Fleet Technical Manual's'' "replacement vessels."
  +
* USS ''Truxton'' (NCC-1728)
  +
* USS ''Confiance'' (NCC-1729)
  +
* USS ''Bunker Hill'' (NCC-1730)
  +
* USS ''La Vengeance'' (NCC-1731)
  +
  +
==== Apocryphal appearances ====
  +
The ''Constitution''-class was present in the alternate [[Star Fleet Universe]], where it served as the backbone of Starfleet from its inception in the Y120s to the advent of the General War and the related deployment of the ''Chicago''-class New Heavy Cruiser. In the Star Fleet Universe, the ''Constitution'' design is descended from the ''Republic''-class cruiser, the first in that universe's Federation fleet to possess the saucer and nacelle configuration. (Some of the older ships were refitted into ''Constitution''-class ships over time, while others became part of the Federation National Guard, protecting the major member worlds.) In time, the advent of more advanced technology resurrected the ship design through the ''Vincennes''-class vessels, a parallel evolution to that seen in the change from the TOS-era ''Enterprise'' to the TMP ship design. Notably, a number of the ships referred to in the original series (such as the ''Hood'' and the ''Excalibur'') or listed in the ''Technical Manual'' (such as the ''Kongo'') are expanded upon in the Star Fleet Universe &ndash; but due to the licensing restrictions under which ADB operates, the ''Enterprise'' herself is not detailed, though her registry is included.
  +
  +
A saucer separation has been depicted in the [[DC Comics]] ''[[Star Trek: Debt of Honor]]''. Here Kirk used "explosive bolts" to sever the connection between the saucer module and the engineering section of the USS ''Farragut''. The same trick was used again in the DC Comics ''[[Star Trek: The Mirror Universe Saga]]'', where Kirk and his crew escaped the self-destruction of the ISS ''Enterprise''{{'}}s engineering section in a last-minute separation. Another ''Constitution''-class ship, the {{mb|USS Confederate|USS ''Confederate''}}, was shown operating without its saucer section in [[Marvel Comics]] ''[[Star Trek Unlimited]]'' Issue 4; after the crew abandoned the [[engineering hull]] via [[saucer separation]] due to a failure in an experimental propulsion system upgrade. In the early drafts of ''Star Trek: The Motion Picture'', the ''Enterprise'' was to separate the saucer. The [[Star Trek: Ships of the Line (2006)|2006 ''Star Trek: Ships of the Line'']] calendar includes a picture of a separated ''Constitution''-class ship, engaging Klingons &ndash; or possibly a Klingon ship flown by the Romulans &ndash; in battle.
  +
  +
''Constitution''-class vessels are prominently featured in [[fan film]] productions like ''[[w:c:stexpanded:Star Trek: Phase II|Star Trek: Phase II]]'', ''[[w:c:stexpanded:Starship Exeter|Starship Exeter]]'' (where the USS ''Kongo'' has actually performed a saucer separation in its second episode), ''[[w:c:stexpanded:Starship Farragut|Starship Farragut]]'', and ''[[w:c:stexpanded:Star Trek: Of Gods and Men|Of Gods and Men]]''.
  +
  +
The refit version of the ''Constitution''-class was still in service in 2409 as a cruiser in the video game ''[[Star Trek Online]]'' (though the [[Star Trek: The Original Series|TOS]] configuration can be purchased into the game as well). The class has also inspired three 24th/25th century successors: the ''{{mb|Excalibur class|Excalibur}}'', ''{{mb|Vesper class|Vesper}}'', and ''{{mb|Exeter class|Exeter}}'' classes. The TOS configuration comes with retrofit fore and aft phasers, which are the TV-correct blue phasers. The ''Exeter''-class, which also can be purchased, comes with the ability to fire photon torpedoes which can hunt down cloaked targets. The ''[[Star Trek: Discovery|Discovery]]'' configuration, available through "Infinity Promotions", is classified as a "flight deck carrier" with two full squadrons of [[tactical flyer]]s.
  +
  +
=== External links ===
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* {{startrek.com|constitution-class-starship|''Constitution''-class}}
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* {{mbeta||''Constitution''-class}}
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* {{wikipedia||''Constitution''-class}}
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* {{Forgotten Trek|designing-the-first-enterprise|Designing the First ''Enterprise''|external}} &ndash; article on Matt Jefferies' design of the ''Enterprise'' for ''The Original Series''
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* {{Datalink|art/1701.html|Designing the Starship ''Enterprise''|external}}
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* {{Forgotten Trek|designing-the-motion-picture-enterprise|Designing The Motion Picture ''Enterprise''|external}} &ndash; article on the design of the refit ''Enterprise'' for ''The Motion Picture''
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* {{Datalink|art/1701refit.html|Redesigning the ''Enterprise''|external}}
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* {{eas|articles/constitution-refit.htm|The ''Enterprise'' Refit of 2271|external}} &ndash; analysis of the several modifications performed on the ''Constitution''-class
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* {{eas|articles/jefferies.htm|Where are the Jefferies Tubes?|external}}
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[[Category:Federation starship classes]]
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[[Category:Starship classes (mirror)]]

Latest revision as of 04:58, 17 September 2021

Multiple realities
(covers information from several alternate timelines)

The Constitution-class was a Federation Starship-class, Class I Heavy Cruiser. They were the premier frontline Starfleet vessels in the latter half of the 23rd century2.

They were designed for long duration missions with minimal outside support and were best known for their celebrated missions of galactic exploration and diplomacy, and were capable of operating on five-year mission cycles.

History

2240s-2260s

During the mid-23rd century, at least twelve Constitution-class starships were commissioned by Starfleet.3 Construction of the starships occurred at Earth's San Francisco Navy Yards, and Luna's Tranquility Base by 2245. (TOS: "Tomorrow is Yesterday"; TAS: "The Counter-Clock Incident"; ENT: "In a Mirror, Darkly"; DIS: "Brother")

One of the class' designers was Lawrence Marvick, whose work included designing the controls for engineering. (TOS: "Is There in Truth No Beauty?") Doctor Richard Daystrom was responsible for the basic design of the computers used aboard this class. (TOS: "The Ultimate Computer")

Future USS Enterprise captain, Robert April, was present when the ship's unit components were built. (TAS: "The Counter-Clock Incident")

Enterprise rendezvous with the Discovery, 2257.

During the Federation-Klingon War, Constitution-class ships were kept off the front lines, as a unit of last resort.4 At the time, the USS Defiant was assigned to patrol Sector 006, while the USS Enterprise was ordered to continue its then five-year mission under Captain Christopher Pike. This order took a toll on their crews. (DIS: "Despite Yourself", "Brother") The mission parameters for the class meant that its vessels usually operated widely dispersed on their own and that encounters with class sisters were few and far between. (citation needededit) The year 2267, however, saw a gathering of the class when a large group was assembled at Starbase 11 for refitting and repairs. (TOS: "Court Martial")

Aboard the Enterprise at least, new colorful Starfleet uniforms were adopted before some other ships. They were seen in use shortly after the Federation-Klingon War. (DIS: "Brother")

Operations, Command, and Sciences uniforms introduced on select starships in 2257

Despite the successes of the class, exemplified by the performance of the Enterprise, under Captain James T. Kirk, the mission parameters for the Constitution-class also meant that the vessels of the class operated under highly dangerous circumstances, resulting in a relatively high loss rate, and that being assigned to one was hazardous at best. (citation needededit)

In 2267 for example, the USS Constellation under the command of Commodore Matt Decker fell victim to what has become known as the "doomsday machine", when it was on a routine survey mission near system L-374, and both the ship and crew were lost. (TOS: "The Doomsday Machine") Likewise, and less than a year later in 2268, the Vulcan manned USS Intrepid was lost with its entire crew, in a fatal encounter with a huge simple cellular being in star system Gamma 7A of Sector 39J. (TOS: "The Immunity Syndrome") Later that year, the USS Exeter became infected with an unknown virus, a residue from biological warfare which had raged on Omega IV and which the ship was orbiting, again killing her entire crew, save for its captain, Ronald Tracey. While undamaged, the contaminated ship was for the time being left adrift. (TOS: "The Omega Glory")

In late-2268, the starships Excalibur, Hood, Lexington, and Potemkin all took part in the disastrous testing of the M-5 multitronic unit, which had been placed in control of the Enterprise. The Excalibur was severely damaged, with all hands lost. The Lexington also was brutally assaulted by the M-5 computer when the unit became unstable. (TOS: "The Ultimate Computer")

Later that year, the Defiant responded to a distress call from an unexplored sector of space, claimed by the Tholian Assembly. Shortly upon entering the region, the Defiant crew began experiencing sensory distortion, and insanity quickly spread throughout the ship. The ship's surgeon was unable to determine what was happening, and eventually, the insanity induced by the phenomenon led the crew to kill each other.

The Defiant in a Tholian drydock facility

Three weeks later, Starfleet ordered the Enterprise to mount a search mission to locate the Defiant. On stardate 5693.2, the Enterprise located her adrift, lost between universes in a space warp. As a result of a later phaser exchange between the Enterprise and two Tholian ships, a hole was created through the spatial interphase, pushing the Defiant into the mirror universe. (TOS: "The Tholian Web")

The Defiant emerged in the 22nd century mirror universe, where the Tholians of that universe had created the interphase rift by detonating a tricobalt warhead within the gravity well of a dead star. The Defiant was initially captured by the Tholians, but later taken over by the Terran Empire with control of the ship finally passing to Hoshi Sato. (ENT: "In a Mirror, Darkly", "In a Mirror, Darkly, Part II")

In 2267, the ISS Enterprise was a Constitution-class starship of the Imperial Starfleet identical in configuration to the prime Enterprise. (TOS: "Mirror, Mirror")

It is unclear what happened to the Defiant following Sato's bid to become empress. The ship appeared in a modified configuration on a display graphic in DIS: "Despite Yourself", which Ted Sullivan confirmed to be modifications made by the Terran Empire, [2] though it was not stated whether the Defiant still existed. Regardless, the Empire appears to have used the original Constitution-class overall configuration for over one-hundred years without any apparent changes.

2270s-2360s

The refitted USS Enterprise over the Genesis planet.

During the early 2270s, Constitution-class starships underwent a major refit program. The actual refitting took eighteen months of work and essentially a new vessel was built onto the bones of the old, replacing virtually every major system. The USS Enterprise continued to serve in its prominent role. In the early 2270s, the Enterprise was critical in defending the Federation from several external threats, including the V'Ger probe, after the probe returned home to find its creator, and Khan Noonien Singh. (Star Trek: The Motion Picture; Star Trek II: The Wrath of Khan; Star Trek III: The Search for Spock)

Constitution-class refit, USS Enterprise NCC-1701-A, circa 2290s.

In 2293, a Task force consisting of the Constitution-class USS Ahwahnee, USS Eagle, USS Emden, USS Endeavour, and USS Potemkin was assembled to assist with rescuing of James T. Kirk, and Leonard McCoy from Klingon captivity as part of Operation Retrieve. The task force was disbanded after the USS Enterprise-A entered Klingon space on its own. (citation needededit) (Star Trek VI: The Undiscovered Country)

At least a few Constitution-class ships remained in service through the 24th century, with at least one ship having engaged the Borg at Battle of Wolf 359. (TNG: "The Best of Both Worlds, Part II")

Another ship preserved in the Fleet Museum in its original configuration. (TNG: "Relics")

Technical data

Physical arrangement

The Constitution-class featured the saucer section-engineering section-warp nacelle layout common to most Starfleet vessels. All ships of the class of the same level of refit appeared to be identical at first glance, but closer inspection revealed minor detail differences on certain vessels. (TOS: "The Cage", "The Ultimate Computer"; Star Trek: The Motion Picture; etc.)

There have been three different renditions of the original design:

The Constitution-class as it appears in TOS-R "The Cage"

The first model, used in the original pilot "The Cage", featured a larger bridge dome and sensor/deflector dish, and spikes on the Bussard collectors, among other minor differences. The second configuration, used in the second pilot, and throughout the rest of the series due to footage being reused, was similar to the first version, with the addition of running lights, additional markings, and a grille pattern on the rear of each engine nacelle.

The Constitution-class as it appears in TOS-R

The version used for the production of the regular series had a smaller bridge dome, a smaller sensor/deflector dish, and lighting effects in the Bussard collectors, which had their antenna spikes removed. The remastered edition of TOS replaced the anomalous stock shots in later episodes with the proper configuration.

The Constitution-class as it appears in DIS

A new, redesigned model for the Constitution-class USS Enterprise was introduced in "Will You Take My Hand?". After briefly considering a radical departure from previous depictions, the designers of this new model instead aimed "to get as close as possible to the original", yet add "the sleek, unique Discovery look to it." While DIS used this new model for all "current" depictions of the class, the "previously on" opening sequence of the Discovery episode "If Memory Serves" utilized an un-remastered shot of the TOS series version, in place of the pilot version, for the events of "The Cage".4 A holographic image of this version of the Enterprise was also featured in the Star Trek: Picard episode "Maps and Legends".5

Various science labs, numbering fourteen in all, (TOS: "Operation -- Annihilate!") were located in the primary hull in the class's original configuration. An officers' lounge and dining area would be located in the aft superstructure beneath the bridge after the 2270s refit. (citation needededit) (Star Trek: The Motion Picture) There were at least seven turbolifts that serviced the primary and secondary hulls. (TOS: "The Man Trap") The Constitution-class had at least two briefing rooms, one of which was located on Deck 14. (TOS: "Mudd's Women") The modular design of the Constitution-class allowed for component separation in times of crisis. The primary and secondary hulls could separate where the connecting "neck" joined the saucer, allowing either section to serve as a lifeboat if the other was too badly damaged. (citation needededit) If an emergency was confined to the warp engine nacelles, it was theoretically possible to disengage and jettison them while keeping the bulk of the vessel intact. Any hull separation was considered a dangerous procedure and not always an option. (TOS: "The Apple", "The Savage Curtain")

Though not an aerodynamic craft, in emergencies, Constitution-class vessels were able to break orbit and enter a class M planet's upper atmosphere (and maintain altitude control while passing through it) for a limited period of time, conditional on the ship's ability to re-achieve escape velocity. (TOS: "Tomorrow is Yesterday")

A model of a refit version of this ship present in a holographic simulation of Drafting Room 5 at Utopia Planitia Fleet Yards had the warp nacelles rotated 90 degrees and included additional hatches along both sides of the saucer. (TNG: "Booby Trap")

It is not clear whether an operational vessel existed in this configuration, or if it was merely a display model.

Propulsion systems

The Defiant, an original configuration Constitution-class vessel cruising at warp in the mirror universe

The Constitution-class of starships has been fitted with both lithium and dilithium reactor circuits in the warp drive assembly over its service lifetime. The vessel's standard cruising speed was warp 6, while its maximum cruising speed was warp 8. Warp 9 was also possible for this class of starship, although it was highly discouraged because it was an unsafe velocity. (citation needededit)

The Enterprise was twice modified to achieve a speed of warp 11. The probe Nomad increased the ship's engine efficiency by 57% in 2267, allowing the ship to reach warp 11, but Kirk persuaded Nomad to reverse its "repairs" because the ship's structure could not stand the stress of that much power, and it would eventually destroy the ship. (TOS: "The Changeling")

More extensive modifications were made to the ship by the Kelvans in 2268, who were able to produce velocities that were far beyond the reach of Federation science, allowing the Enterprise to safely maintain a cruising speed of warp 11 while traveling through the intergalactic void. (TOS: "By Any Other Name")

The maximum warp speed recorded for this class by itself was warp 14.1, achieved by the Enterprise due to sabotage to the vessel's warp drive system. While the ship itself was not structured to take that speed for any length of time, the Enterprise was able to maintain that velocity for nearly fifteen minutes. (TOS: "That Which Survives")

The Enterprise also maintained stability at warp 22 while tractored to a ship going warp 32. (TAS: "The Counter-Clock Incident")

Following the 2270s refit of the class, the Constitution was equipped with a linear dilithium-controlled MARA (matter/antimatter reactor assembly), and a pulse dilithium-controlled assembly was installed by the mid 2290s aboard the USS Enterprise. (Star Trek II: The Wrath of Khan; Star Trek VI: The Undiscovered Country) (citation needededit)

The Constitution-class's impulse drive system was a twin-port engine, capable of velocities at least warp factor 0.8. (Star Trek: The Motion Picture) A fusion explosion equivalent to at least 97.835 megatons would result if the impulse engines were overloaded. (TOS: "The Doomsday Machine")

Tactical systems

While the Constitution class was never meant as a warship, the vessel was adequately well-armed for dealing with various threats. Exercising Federation defense policy and if need be sustained conflict was built into them. Thus they carried an array of weapons thus allowing them to hold their own against even dedicated warships of its day.

Phaser batteries

USS Enterprise firing her main batteries

During the early 2250s, Constitution-class heavy cruisers were armed with a complement of directed energy weapons, that possessed enough power to destroy half a continent in a concentrated bombardment. In addition, these vessels carried on board laser cannons, capable of operating on energy fed remotely from the ship. (TOS: "The Cage", "The Menagerie, Part I", "The Menagerie, Part II")

According to the Star Trek Spaceflight Chronology (p. 164), the advanced ship-board laser banks used by Constitution-class starships were upgraded to phaser banks four years after the Enterprise had visited Talos IV in "The Cage".

By 2257, phaser banks were standard complement aboard this class of ship. A bank actually consisted of a single emitter and its power supply, though it was common practice to fire two banks at a time and refer to it as a single firing. (DIS: "Such Sweet Sorrow"; TOS: "The Corbomite Maneuver", "The Doomsday Machine", "The Paradise Syndrome")

Ship-mounted phaser banks had a range of approximately 90,000 kilometers. Like hand phasers, they were capable of being adjusted to stun, heat, or disintegrate targets, including objects or beings in space or on a planet's surface. The focus could be adjusted from a narrow to a wide beam. When only motion sensor readings were available, the ship's phasers could be set for proximity blast and bracket the approximate coordinates of the target. (TOS: "Balance of Terror", "A Piece of the Action", "The Ultimate Computer", "Who Mourns for Adonais?", "The Paradise Syndrome", "The Tholian Web")

In the original configuration, a battery of several forward phaser emitters was located on the lower part of the ventral side of the saucer section. Aft firing banks were located above and below the shuttlebay on the secondary hull. There were also port, starboard, and midship phasers. (ENT: "In a Mirror, Darkly, Part II"; TOS: "Balance of Terror", "The Paradise Syndrome", "Arena", "Friday's Child", "Turnabout Intruder"; DIS: "Such Sweet Sorrow, Part 2").

Based on dialogue from "The Paradise Syndrome", there were four forward phasers, though the visual effects in that episode depict two phasers firing on each discharge, suggesting a battery of eight forward phaser emitters.
In a scene description from the final draft script of "In a Mirror, Darkly, Part II", the aft phaser was said to be "beneath the hangar deck." However, the location of the aft phaser is shown on-screen to be above the hangar deck.
A top view graphic of the original Constitution-class configuration, used on a computer screen in TNG: "Datalore", depicts the port and starboard emitters on the dorsal surface of the primary hull. Two banks cover both flanks.

A refit Constitution vessel fires its forward phasers

After the refit of the 2270s, Constitution-class ships mounted three dual-emitter phaser banks on the ventral and three on dorsal faces of the saucer. They covered the forward, port and starboard flanks. Two single emitter aft banks were above the shuttlebay and four midship single emitter banks were located on the ventral surface of the engineering hull. Phaser power was increased by drawing energy directly from the warp drive. This increase in firepower had a drawback, in that the phasers would be cut off if the main reactor was off-line. This problem hampered the USS Enterprise on at least two occasions, one in the 2270s and again in 2285. (Star Trek: The Motion Picture; Star Trek II: The Wrath of Khan)

Torpedo systems

Torpedo launcher (original configuration)

Early configuration Constitution-class ships originally mounted six forward torpedo tubes on the underside of the saucer section, (citation needededit) and one aft mounted tube at the end of the secondary hull. This combined arsenal was powerful enough to destroy the entire surface of a planet. (TOS: "Arena", "A Taste of Armageddon", "Journey to Babel"; TAS: "More Tribbles, More Troubles"; ENT: "In a Mirror, Darkly, Part II")

The number of forward torpedo tubes is based on the line of dialogue "fire photon torpedoes two, four, and six" from "Journey to Babel," and the dialogue and scene from "Elaan of Troyius" in which all tubes were brought to bear and the full spread of torpedoes from the forward tubes consisted of six photon torpedoes.
Dialogue from "A Taste of Armageddon" states that the Enterprise possessed a complement of at least "a few dozen." According to the Star Trek Spaceflight Chronology (p. 164), in the original configuration the ship carried a total of four hundred photon torpedoes.

Torpedo manifest (refit configuration)

Torpedo launcher (refit configuration)

The post-refit vessels had two forward firing torpedo launchers, though each tube could fire at least two torpedoes before reloading. (Star Trek II: The Wrath of Khan; Star Trek III: The Search for Spock)

Based on the torpedo manifest graphic in Star Trek VI: The Undiscovered Country, the refitted Constitution-class was armed with a total of 144 photon torpedoes, arranged in twelve stacks, each containing twelve torpedoes on top of one another.


Deflector shields

Deflector status display

The Constitution-class starship had a powerful deflector shield grid in the 2260s. The shield grid was divided into four segments, referred to as "number one shield", "number two shield", etc. (TOS: "Journey to Babel", "Elaan of Troyius") At full power, with the warp reactor tied into the shield system, it was capable of absorbing and repulsing a bombardment of energy impacts equal to the detonation of 360 photon torpedoes of the type the Enterprise was equipped with at the time, before the shielding power was completely lost. In 2267, for example, the Enterprise survived an attack from the Nomad probe. Nomad fired four powerful bolts of energy, each with the equivalent force of ninety photon torpedoes. The first hit reduced shielding power only by twenty percent. After being hit with the equal force of 270 photon torpedoes, warp maneuvering power was lost. Shields were lost with the fourth hit. (TOS: "The Changeling")

The deflector shield grid was much more vulnerable to intense standard phaser bombardment. In 2268, an Orion scout ship was able to cause buckling in some of the shields of the Enterprise after it had made just five attack runs on the ship. On the seventh run, the Enterprise lost one of its four shields. (TOS: "Journey to Babel") Other more powerful weaponry could take the shields down even more easily, the planet killer for example could completely deplete a Constitution-class starship's shielding power with only three hits with its antiproton beam. (TOS: "The Doomsday Machine")

The diversion of all but emergency maintenance power to the shields had the adverse effect of reducing phaser power by fifty percent. (TOS: "The Tholian Web") A single detonation of a nuclear warhead less than a hundred meters away could cause internal overloads on the ship and leak radiation through the shields to the outer regions of the ship. (TOS: "Balance of Terror") Without the warp reactor to power the shields, the system was not very effective in protecting the ship. With only the impulse reactors powering the shields, a D7-class Klingon battle cruiser could deplete a Constitution-class starships shielding power with only few passes of disruptor fire. (TOS: "Elaan of Troyius")

After the refit, in the 2280s, a Constitution-class starships needed 13.5 seconds to lower and raise their shields when taking a shuttlecraft on board via its tractor beam. Piloting the shuttle manually reduced this time significantly. (Star Trek V: The Final Frontier) During yellow alerts, defense fields were activated to offer basic protection to the main bridge. (Star Trek II: The Wrath of Khan)

According to Mr. Scott's Guide to the Enterprise (p. 14), the deflector shields after the refit in the 2270s, were redesigned as a massive replicator system, projecting an invisible hull layer, molecularly identical to the diburnium-osmium alloy used to build the Kalandan outpost seen in the episode TOS: "That Which Survives".

Transporter systems

Extravehicular transporter to and from the ship was accomplished by a number of transporter systems, which allowed personnel or equipment to be transported over large ranges. The transporter platform featured six pads, which were numbered clockwise, beginning with the right front. A redesigned field generator matrix was mounted into the rear wall of the chamber aboard the refit configuration Constitution-class starships. (citation needededit)

Aboard the refitted Constitution-class vessels, the transporter operator stood within an enclosed control pod, which had a floor-to-ceiling transparent aluminum panel through which he or she could view the transport platform. This panel served to shield the operator from the effects of any cumulative radiations emitted by the new transporter machinery, a side effect of the more powerful system. (citation needededit)

A door in the standard transporter room wall led to a staging area where landing parties prepared for transporter. (citation needededit)

Crew support systems

Medical systems

Biobeds in sickbay

On the original Constitution-class starships, a sickbay facility was located on Deck 6, which featured an examination room, a nursery, the chief medical officer's office and a medical lab. At least one other medical lab was located elsewhere on the vessel, and was used for biopsy, among other things. Sickbay was considered the safest place to be on the ship during combat. (TOS: "The Naked Time", "Elaan of Troyius") Many of the tools used in the Sickbay aboard the USS Enterprise, following her launch, were designed by her first medical officer, Doctor Sarah April, as life aboard required frequent improvisation. (TAS: "The Counter-Clock Incident")

The sickbay set of the pilot episode "Where No Man Has Gone Before" underwent considerable changes following the shooting of the episode for the remainder of the series.

Intensive Care Unit on a refit configuration vessel

Refit configuration examination room

With the class refit of the 2270s, the medical facilities of the Constitution-class starship were considerably updated. New micro-diagnostic tables were capable of fully analyzing the humanoid body at the sub-cellular level, offering the physician a total understanding of the patient's status.

Another new addition was a medical stasis unit, in which patients whose conditions were considered immediately life-threatening could be placed into suspended animation until the proper cure or surgical procedure could be established. (citation needededit) (Star Trek: The Motion Picture)

Interior design

A typical corridor on the Constitution-class, late 2250s

A typical corridor on the Constitution-class, 2260s

The color scheme implemented aboard Constitution-class ships was predominantly red accents alongside dark gray or light gray paneling. These colors were accented with soft white light or multi colored lights installed in floor and wall paneling, and later, in the ceiling. This color scheme was kept until the Constitution-class refit in the early 2270s. (Star Trek: The Original Series (citation needededit); ENT: "In a Mirror, Darkly", "In a Mirror, Darkly, Part II"; DIS: "Brother", "Such Sweet Sorrow", "Such Sweet Sorrow, Part 2"; ST: "Q&A", "The Trouble with Edward", "Ask Not")

Turbolift car interior, late 2250s

After the refit, the color scheme varied, changing from a beige tone, with red accents to a predominate overall gray/dark gray toward the 2280s. (Star Trek: The Motion Picture; Star Trek II: The Wrath of Khan; Star Trek III: The Search for Spock; Star Trek IV: The Voyage Home; Star Trek V: The Final Frontier; Star Trek VI: The Undiscovered Country)

Main bridge

Main bridge of the USS Enterprise in 2254

As is typical for Starfleet vessels, the main bridge of the Constitution-class was located on Deck 1 of the primary hull.

Multiple sets were used to represent the bridge of the original Constitution-class. In Star Trek: The Next Generation, a partial set was faithfully recreated for "Relics", a full set was created for "Trials and Tribble-ations", a new set with a slightly altered appearance was built for the two part "In a Mirror, Darkly" and "In a Mirror, Darkly, Part II", and starting with "Such Sweet Sorrow", a completely new set, with updated design, bigger overall diameter, and a blend of touchscreen and classic jelly bean controls was introduced.

Main bridge of the USS Enterprise in 2258

The command chair was located in the recessed area at the center of the room, in a direct line with the main viewer. This position was equidistant from all the control consoles that operated specific areas of the ship. Consequently, the captain could be immediately updated on the condition of the vessel or its crew during missions, and orders could be given clearly with a minimum of effort. The chair was mounted on a circular pillar, attached to a rectangular footplate that was directly anchored to the deck, giving it considerable support during an attack. It was designed to swivel on the support so that the captain could turn to any member of the bridge crew.

Piloting and navigation functions were carried out at the helm console, located in the center of the room, positioned in front of the command chair. This panel consisted of three main sections.

Main bridge of the USS Defiant from 2268

On the left was a compartment which opened automatically to permit operation of the targeting scanner. Next to this was the main control panel, which operated maneuvering thrusters, impulse engines, and fired the ship's weapons. Directly below this panel was a row of eight flip-switches provided to set warp flight speeds.

The central section of the conn panel was fitted with a number of sensor monitor lights, and was dominated by two main features: the alert indicator and the astrogator, which was used for long-range course plotting. The navigator's station had a control panel for entering the course and heading data and the flight path indicator and supplied information on any deviations or course corrections in progress. It also had controls for the weapons systems.

A duotronic-based data-input bridge console

Other stations on the bridge were provided for communications, engineering, weapons control, gravity control, damage control, environmental engineering, science and library computer, and internal security. All stations were normally manned at all times. (citation needededit)

Mounted into the room's forward bulkhead was the main viewscreen. Visual sensor pickups located at various points on the Constitution-class' outer hull were capable of image magnification and allowed a varied choice of viewing angles. (citation needededit)

The computer systems aboard the Constitution-class starship were duotronic based. (TOS: "The Ultimate Computer"; DS9: "Trials and Tribble-ations")

Upgrades

Enterprise bridge wide, TAS.jpg Constitution class refit bridge, 2270s.jpg
Main bridge of the USS Enterprise (2269)
Refit configuration bridge (2270s)
Constitution class refit bridge, 2286.jpg Constitution class refit bridge, 2293.jpg
Refit configuration bridge (2286)
Refit configuration bridge (2293)

Only one turbolift serviced the bridge of the original configuration Constitution-class ship. In the late 2260s, some were refit with a second lift on the port forward section of the bridge. (TAS: "Beyond the Farthest Star") After the major refit in the early 2270s, the bridge aboard Constitution-class vessels would continue to utilize two turbolifts, but both would be located behind the command chair. (Star Trek: The Motion Picture)

The Star Fleet Technical Manual states that the original bridge was rotated 36° port, which would have the turbolift shaft travel down the center-line of the saucer section. The Technical Manual gives no reason for this offset. With artificial gravity limiting any sense of momentum and electronic displays instead of windows, there may have been no reason for the bridge crew to face directly forward.
According to production designer Matt Jefferies, dramatic necessity required the turbolift to be moved from its planned center-line position (as seen on the Enterprise model). This offset placement allowed characters to walk onto the bridge and enter scenes without being blocked by actors sitting in the command chair.

The bridge of the Constitution-class starships were subject to many minor and major cosmetic changes over their many years of service. In particular, the main bridge of the USS Enterprise seems to have undergone considerable changes in appearance. In the late 2260s, along with the added turbolift, the bridge design changed from a segmented flat-panel peripheral station configuration to a completely circular design, including curved overhead view screens, and railings and steps which matched the arc of the circumference. At the same time, an automatic bridge defense system was also installed that obscured the translucent overhead dome, which did not return until the Galaxy-class bridge. (TAS: "Beyond the Farthest Star") This marked the beginning of major changes to come which would utilize the updated substructure and, most notably, its systems were fully upgraded along with the refit of the early 2270s. (Star Trek: The Motion Picture)

The bridge underwent only a few minor modifications from that point until the destruction of the ship in 2285. The bridge of the USS Enterprise-A, commissioned one year later (in 2286), had mainly cosmetic differences at launch, but by 2287, it had been drastically upgraded to reflect the advances made in computer control technology. (citation needededit) The bridge module had again been replaced (citation needededit) by 2293. The lighter color scheme of the original Enterprise-A bridges had made room for a darker, more militaristic look. (Star Trek II: The Wrath of Khan; Star Trek IV: The Voyage Home; Star Trek V: The Final Frontier; Star Trek VI: The Undiscovered Country)

The controls that were seen in the fifth movie were designed to reflect a change towards a more "TNG-control" solid-state style. However, in the sixth movie, the controls had been redesigned to a more "push button-tactile-response" design.

Officers' lounge

Officers' lounge privacy area on a Constitution-class vessel of the refit lineage

Located at the stern of Deck 2 aboard the refit configuration Constitution-class starship was the officers' lounge. Here, four huge view ports afforded a spectacular view of the ship's warp nacelles and space beyond. (citation needededit)

To the sides, small plant areas held flora from several worlds and a small pool featured freshwater tropical fish. Just forward of this section of the lounge were two privacy areas. In each privacy area, a view screen was mounted into the wall, providing a full exterior tour of the vessel. (citation needededit) (Star Trek: The Motion Picture)

Recreational facilities

A typical recreation room (2260s)

Recreation room (refit configuration, 2270s)

Aboard the original Constitution-class starships, there were at least six recreation rooms, which included three-dimensional chess and card game tables. There was also a holographic rec room, which was the predecessor of the holodeck. Also aboard were an arboretum, galley, gymnasium, a bowling alley, a theater, and a chapel. (TOS: "Charlie X", "The Naked Time", "The Conscience of the King", "Is There in Truth No Beauty?"; Star Trek: The Motion Picture)

On the refitted Constitution-class vessels, recreational facilities were further expanded. One large room in the aft section of the starship's saucer section furnished off-duty personnel with a wide variety of recreational games and entertainment. At the front of the room was an immense, wall-mounted viewing screen. Beneath this was an information display alcove; five small screens exhibited a history of selected vessels called Enterprise. A raised platform in the center of the lower level floor featured a diversity of electronic entertainment. (Star Trek: The Motion Picture)

Crew quarters

Michael Burnham in Spock's quarters.jpg Enterprise quarters, original.jpg
Crew quarters in the 2250s
Crew quarters in the 2260s
Jonathan Archer (mirror) in a wraparound tunic.jpg Constitution class refit officers quarters.jpg
Senior officers's quarters on an original Constitution
Officers's quarters on a refit configuration Constitution

Crew quarters were located throughout the saucer section – keeping with Starfleet tradition, Deck 5 housed the senior officers' quarters. On the refit configuration vessels, these staterooms were quite similar to the VIP units on Deck 4, with only a few differences.

On starships of the original configuration, the officers' quarters featured two areas, separated partly by a wall fragment. One area was allocated as sleeping area, featuring a comfortable bed, and another as work area, including a desk and computer terminal. Entrance to a bathroom was provided through the quarter's sleeping area. Both areas could be configured to personal preference. (ENT: "In a Mirror, Darkly, Part II"; TOS: "The Enemy Within")

On the original series, several "different" crew quarters were seen, but always the same set was used, changed by different lighting designs and furniture configuration.

On Constitution-class vessels, staterooms of the senior officers were composed of two areas which were separated by a retractable, transparent aluminum (citation needededit) partition. The room's entrance opened into the living area. A library computer terminal and work desk were provided here. The room's corner circular nook, normally occupied by a dining booth, could be modified at the officer's request. (citation needededit)

The other half of the stateroom was a sleeping area, which held a single large bed that could double as a sofa during off-duty relaxation. A transparent door led into the bathroom area. (Star Trek: The Motion Picture)

By the 2290s, the size of officers' quarters was reduced to one large room and crewmen were housed in dormitories with bunk beds. (Star Trek VI: The Undiscovered Country)

Landing bay and cargo facilities

Galileo approaches USS Enterprise from Vulcan.jpg Galileo and Columbus on hangar deck.jpg
Original configuration, external view
Original configuration, internal view
Constitution class refit landingbay.jpg Enterprise-A shuttlebay.jpg
Landing bay on a refit configuration vessel
Refit configuration, internal view

Deck 17 was the main access level of the engineering hull. The aft landing bay provided personnel in small craft with a means of entering or exiting the vessel, as did docking port on either side of the level.

The original configuration of the Constitution-class carried a standard complement of 4 shuttlecraft, some of which were Class F. (TOS: "The Omega Glory")

This may have varied per ship, as while the USS Exeter was specifically stated to just have four, the USS Enterprise was seen with one Class F and three other shuttles in its shuttlebay in TAS: "Mudd's Passion". The same ship was also seen to have at least two Class F shuttles earlier in TOS: "The Galileo Seven", so its shuttle configuration may have varied over time as well.

The refit configuration Constitution-class starship featured a new landing bay design. A wide range of Starfleet and Federation craft could utilize this state-of-the-art landing facility. Alcoves on either side of the landing bay provided storage for up to six standard Work Bees, and furnished all necessary recharging and refueling equipment. Additional space was available for the storage of non-ship shuttlecraft. (citation needededit)

Just within the landing bay doors was a force field generator unit, which was built into the main bulkheads on either side of the entry area. This field allowed craft to enter the ship, while at the same time retaining the atmosphere and temperature within the landing bay. (citation needededit)

Deck 18, the refit configuration shuttlecraft hanger bay, was situated at the widest point of the engineering hull. Much of the deck consisted of open space, as it was the mid-level of the cargo facility; thirty-two cargo pod modules could be stored in the alcoves lining the forward, port, and starboard sides of the bay. (citation needededit)

The shuttle hangar had sufficient room for the storage of four craft at any given time. During normal storage situations, these shuttlecraft faced aft. (citation needededit)

This deck also housed the vessel's lifeboat facilities. These one-man craft, which escaped through blow-away panels in the side of the secondary hull, were provided for those persons were unable to reach the primary hull in case of an emergency. (citation needededit) (Star Trek: The Motion Picture)

Airlocks

Airlock staging area in the 2270s

Refit Constitution-class starships possessed a number of airlocks permitting direct physical access to the ship. One was located at the aft of Deck 1 on top of the saucer section. (Star Trek: The Motion Picture)

Yet another was located on the ventral port-side saucer section, concealed by sliding hull plates. It was accessed through a staging area. (Star Trek: The Motion Picture) Four spacesuit lockers lined one wall, each containing one suit, providing enough to clothe a standard party of four. A small, locked arms cabinet held phasers; communicators, tricorders, translators, and outerwear were contained in a separate cabinet on another wall. (citation needededit)

An identical set of doors was located on the starboard side; most published blueprints suggest yet another docking port here as well.

The next set of airlocks were located on the port and starboard sides of the torpedo bays. The final set were located on the port and starboard sides of the secondary hull at the midline. (Star Trek: The Motion Picture; Star Trek II: The Wrath of Khan) These airlocks opened into the ship's main cargo bay. There was also a "gangway"-style airlock on the port edge of the saucer section. (Star Trek: The Motion Picture)

The presence of a similar "passageway" visible in the Tholian drydock holding the USS Defiant suggests that it was a feature of the pre-refit Constitution-class as well. (ENT: "In a Mirror, Darkly")

Located on the upper surface of the saucer section of the refitted Enterprise were numerous small hatches used for entrance and egress during extra-vehicular activities. (Kirk, Spock, Decker, McCoy, and the Ilia probe used one of these hatches to leave the ship when they arrived at V'Ger's "core".) (Star Trek: The Motion Picture)

Main engineering

USS Enterprise Main engineering 2250s.jpg
USS Enterprise main engineering, 2250s
Constitution original engineering2.jpg Constitution original engineering.jpg
main engineering, 2266
main engineering, 2268
Constitution class warp core, 2269.jpg Main engineering, dilithium chamber.jpg
main engineering, 2269
Dilithium chamber in engineering in 2269
Constitution class refit engineering.jpg Constitution Engineering.jpg
Refit configuration main engineering, 2270s
...and its upper engineering level, 2290s

Main engineering was from where the ship's warp was controlled. All thrust and power systems were primarily controlled from this site, and it is also where the main dilithium crystal reactor was located. Life support was controlled separately from Deck 6. (TOS: "The Ultimate Computer", "The Corbomite Maneuver", "The Naked Time", "The Enemy Within", "The Conscience of the King", "Day of the Dove")

During the 2270s Constitution-class refit, the interior design of the engineering section was drastically upgraded, featuring the vertical warp core and the horizontal intermix area.

Main engineering was lodged on Decks 14 and 15. Deck 14 was the uppermost level of the engineering hull, and was the anchoring framework for the connecting dorsal and the warp nacelle pylons. (citation needededit)

On the forward end of the deck was the engineering computer monitoring room, which encircled the cortical intermix shaft and opens, to the rear, into the engineering computer bay. (citation needededit)

Deck 15 housed the main engineering room. Located in the center of the room, and extending for many levels both above and below the deck, was the warp core. This complex, radically new design in intermix technology, provided operational power for the impulse drive system and furnished enough additional energy to power all other shipboard systems. (citation needededit)

Both matter and antimatter for this chamber were contained in a series of magnetic bottles, which were housed in pods at the base of the intermix shaft. (citation needededit) (Star Trek: The Motion Picture)

Ships commissioned

Certain6
Alternate
Unnamed
Fictional
Uncertain9

Appendices

See also

Appearances

The Constitution-class Enterprise appeared in every episode of TOS and TAS, except for "The Slaver Weapon". Episodes featuring other Constitution-class vessels, or the Enterprise for other series, are listed below.

References

Background information

For information on the origin of the Constitution-class designation, please see Starship-class.

Interiors

For information on the Constitution-class interior sets, please see Constitution-class sets.

Registry number

Apart from designing the ship, Art Director Matt Jefferies was also responsible for conceiving its original, famous registry number "NCC-1701". As he explained, "Since the 1920's [sic], N has indicated the United States in Navy terms, and C means 'commercial' vessel. I added an extra C just for fun. Interestingly, Russia's designation is CCC. So The N and C together made it kind of international. After that, I had to pick some numbers. They had to be easily identifiable from a distance, so that eliminated 3, 8 , 6, 9 and 4-none of which is that clear from a distance, That didn't leave much! So 1701 was as good a choice as any. The reason we gave for the choice afterwards was that the "Enterprise" was the 17th major design of the Federation, and the first in the series. 17-01!" (Star Trek: The Original Series Sketchbook, p. 62), "(…) which, incidentally and coincidentally, happens to be very close to the license number on my airplane – NC-17740. But I have never really stepped out and squashed the rumor that the number on the "Enterprise" came off my airplane." (Star Trek: The Magazine Volume 1, Issue 10, p. 26)

Saucer separation

A saucer separation capability for the Constitution-class was suggested as early as the second season of the Original Series in the original script of its episode "The Apple", but was never produced as no Original Series script has ever actually called for one. The capability was however envisioned by the producers, "Designed to operate separately from the rest of the ship, the saucer therefore contains all elements necessary for independent operation." (The Making of Star Trek, p. 171) The intent made it even into the official series' internal writer's guide, The Star Trek Guide (third revision, page 15 of the supplement and generally dubbed the "Writer's Bible"), where the saucer section was described to be "in fact a completely self-sustaining unit which can detach itself from the galaxy drive units and operate on atomic impulse power for short range solar system exploration." [3]

The original saucer separation intent was reconfirmed years later on two occasions, when efforts were underway to revitalize the live-action franchise. Production Illustrator for Star Trek: Planet of Titans, Ralph McQuarrie, stated on several of the concept drawings he had created for a newly conceived Enterprise, "The saucer of the Enterprise (which was detachable) ends up in the shroud. They meet the aliens and had a dramatic finale. These two images are of the Enterprise saucer in the shroud. (…) The disc of the Enterprise would separate from the rest of the ship to land on the surface of planets." [4] The sketches McQuarrie referred to, of the independently operating saucer section, were published in The Art of Ralph McQuarrie (pp. 124-129). The second occasion occurred when Star Trek: Phase II Producer Robert Goodwin reported in a progress memo dated 8 September 1977, "Meanwhile we're having a new model of the Enterprise constructed, with the added bonus of a saucer section which can separate from the engine nacelles, should such a maneuver be a necessary part of some story. This capacity of the Enterprise was described in The Making of Star Trek, although it was never utilized in the first series." (Starlog, issue 11, p. 39)

Probert separation 2.jpg Probert separation 1.jpg
Probert's The Motion Picture saucer separation concept

Yet another saucer separation sequence was envisioned by Andrew Probert in 1979 when script treatments for Phase II's successor, The Motion Picture, were in flux. During a lull in script development Probert came up with an alternative scene in which V'Ger releases a Klingon K't'inga-class battle cruiser. Upon re-materialization the Klingons true to their nature immediately attack the Enterprise. During the battle Kirk is forced to perform a maneuver akin to that of William T. Riker in "The Best of Both Worlds, Part II". Douglas Trumbull liked the idea and had Probert draw up color storyboards to show the sequence. Some of the storyboards were published in Star Trek: The Magazine Volume 1, Issue 22, p. 132, and in The Art of Star Trek, pages 198-199. Probert's concept was not entirely a flight of fancy as the actual studio model, in line with Goodwin's prior memo annotation, was constructed in such a way that a saucer separation could easily be filmed if the need arose – contrary to the Original Series filming model, which was not. (Star Trek: The Next Generation Companion (3rd ed., p. 9)) Probert himself remarked in this regard, "The Enterprise was always designed to separate from the Engineering section. I knew about this when I did Star Trek: The Motion Picture. And if you look at the bottom of Kirk's Enterprise [note: original configuration], you'll notice two triangular items, which are two of the landing feet for the saucer. Regardless of whether it was Matt Jefferies' original intention or not, it's sort of the way that "Trekdom" or "Star Trek lore" has labeled those features. So taking my cue from that for Star Trek: The Motion Picture, I placed four landing legs in the bottom of the Enterprise and created a very specific separation line on the dorsal." (Star Trek: The Next Generation USS Enterprise NCC-1701-D Blueprints, booklet, p. 8)

Size

Constitution-class USS Enterprise NCC-1701 finalized plan views by Matt Jefferies.jpg
Jefferies' detailed size plan views he created for AMT
D7-class and Enterprise scale drawings.jpg Constitution-D7 class comparison.jpgConstitution-D7 class comparison 2.jpg
Jefferies' size comparison graphics production art…
…as featured in "The Enterprise Incident"

The dimensions of the Constitution-class, 947 feet (289 meters) long for the original configuration and 1,000 feet (305 meters) for the refit-configuration, are the ones that are universally accepted by production staff and fans alike, and propagated in virtually all reference works dealing with the subject, starting with the very first one, The Making of Star Trek, published in 1968. That being said and oddly enough, neither dimension has actually ever been canonically confirmed, as neither dimension was ever seen or referred to in any of the live-action Star Trek productions until 2019.

The original configuration length of 947 feet was first derived from Stephen Edward Poe's reference book, The Making of Star Trek, p. 178, and that dimension has been propagated in every subsequent reference work ever since. However, what Poe did not mention was that designer Matt Jefferies had originally produced that graphic in 1967 as a reference for Poe's employer, model kit company Aluminum Metal Toys for their 1968 second edition retooled USS Enterprise model kit, No. S951 – where the graphic was displayed on the side of the box prior to its publication in the book – and not for the actual Original Series production. Remarkably, the dimension of the starship had been in flux until that time as producer Gene Roddenberry's memo of 24 August 1964 evidenced, "We anticipate a final design might see the ship as 200 feet in length, and thus even a 1½-inch scale would give us quite a huge miniature." This figure, initially accompanied with a crew complement of 203 would actually more or less stand until Jefferies, utilizing his engineering background, recalculated the figures for his design three years later. (The Making of Star Trek, pp. 89, 134)

The original configuration Constitution-class length came closest to canon, when two ship size comparison graphics were featured in the Original Series third season episode "The Enterprise Incident". The two computer console graphics, also created by Jefferies, showed a Constitution-class vessel in comparison with a Romulan D7-class battle cruiser and an in the episode barely discernible yardstick. Yet, careful measurement of the production art of the graphic, using the featured yardstick, measured the Constitution-class vessel actually at exactly 900 feet (274 meters). Jefferies later sold his original plan view design art, including that for AMT, in the Profiles in History The Star Trek Auction of 12 December 2001, in order to raise funding for the Motion Picture & Television Fund charity.

Likewise, the 1,000 feet length of the refit-Constitution-class was never canonically established on screen either, instead generally gleaned from the 1991 reference book, Star Trek: The Next Generation Technical Manual, where it was propagated to the public at large. The Manual itself was based on the internal document Star Trek: The Next Generation Writers' Technical Manual in which Andrew Probert had provided dimensions for most of the more prominent Starfleet vessels until then established in the live-action franchise. In fact, it was Probert himself who took the initiative to introduce the new dimension when he co-designed the refit-Enterprise for The Motion Picture, "I wanted to actually go larger on the size of the ship, not realizing at the time that the Enterprise was originally in drydock for a refitting. Richard felt we should stay with the proportions that we had inherited from Matt Jefferies and Joe Jennings, when they'd designed it for Star Trek: Phase II. So with that as our starting basis. I lengthened the ship to a thousand feet, just a few feet longer than it was, and enlarged the saucer, eventually adding an updated superstructure to the top and bottom of it." [5]

In turn, Visual Effects Art Director Nilo Rodis adopted Probert's dimension as a yardstick for the multitude of newly-introduced starships designs on the size comparison production art, he had created for Star Trek III: The Search for Spock, published in a Cinefantastique article (Vol 17 #3/4, 1987, p. 77) almost a decade later, and where the size was actually disclosed to the general public for the very first time. This was not a whimsical act on Rodis' part; since studio models were almost never build in scale to each other, visual effects compositors at Industrial Light & Magic needed some sort of a reference dimensional framework in order for them to take the relative sizes of the newly designed ships into account, when editing their ship effects footage if more that one appeared in a shot, for the interior Earth Spacedock scenes in particular. Rodis' dimensions for the new ships (and spacedock) were reciprocally adopted by Probert for the later Writer's Technical Manual.

Studio models

For information on the Constitution-class studio models, please see:

Deleted Scene

Original configuration Constitution-class in the alternate reality

A deleted scene from Star Trek Into Darkness featured a model of a Constitution-class starship, the USS Biddeford with the unusual registry NCC-0718, in the office of Alexander Marcus. Since the featured alternate reality Constitution-class is markedly different in design – a refit-version if you will, had the scene been included – , it is unclear whether this would have implied the prime original configuration Constitution-class also existed in the alternate reality, albeit with apparently far lower registries. However, since production sources proceeded from a mid-2220s class launch (see below), the existence of prime universe versions of one or more Constitution-class vessels in the alternate reality is therefore actually not in violation with established continuity as proceeded from, as the latter was only created in 2233 – before prime universe Enterprise was launched – , also accounting for the low registry of Biddeford (see also in this regard: Federation starship classes: Background information).

Footnotes

1 In "The Cage" (set in 2254), Pike claims to be responsible for 203 lives. In "Brother" (set in 2257), scans show 203 crew members which is explicitly called the vessel's entire complement. However, a display graphic featured in the same episode specifically states that the crew complement is 430 (43 officers, 387 enlisted). This is the implied number of personnel of the ship in "The Ultimate Computer" (set in 2268, during a later five-year mission). The 203 crew count originated from Gene Roddenberry's original March 1964 Star Trek is... pitch (p. 9), whereas he had revised the number upwards to 430, "approximately one-third of them female", in the 17 April 1967 third draft of what was now the The Star Trek Guide (p. 7), famed in later Star Trek-lore as the "The Writer's Bible". The latter number was adopted by Franz Joseph for his 1975 Technical Manual, whose "Class I Heavy Cruiser – Constitution Class Starships" specifications in turn became the source for most of these seen on the "Brother" graphic display, thereby de facto elevating the hiterto conjectural specifications to canon.

Constitution primary phaser.jpg Technical journal.jpg
First Constitution-class designation mention, in a phaser technical diagram for "Space Seed"…
…as ultimately read by Scotty in "The Trouble with Tribbles"…
Scott examining a Constitution class diagram.jpg
…and on a diagram in The Undiscovered Country

2 The launch date of the class (for the Starship vs. Constitution-class dichotomy, please refer to: Starship-class background information) has never been established, but the reference book The Making of Star Trek stated on page 203 that the producer's intent was that the "Enterprise-class starships have been in existence for about forty years." Its author Stephen Whitfield, who had full access to production sources, wrote the book during the production of season two, narrowing the class launch window down to the mid-2220s. Interestingly, this meant that the Enterprise was a relative latecomer into the class, as its launch year was generally understood, but not firmly established, to be 2245 by production staffers and as was propagated in numerous reference books afterwards. Greg Jein in his influential "The Case of Jonathan Doe Starship" article also proceeded from this understanding and, taking his cue from the "MK IX/01" annotation on the technical journal graphic Montgomery Scott was reading in "The Trouble with Tribbles", postulated the ship to be of a newer "MK IX" subclass, with the USS Constitution (NCC-1700) as its (sub-)class vessel, in the process trying to make sense of the lower registry numbers by postulating them to belong to older subclasses. Jein postulated the Enterprise as the second MK IX subclass member, hence the justification of the "01" addition to both the registry "NCC-17" and the technical journal graphic as seen, the reasoning adopted by the original registry designer, Matt Jefferies, as he himself had stated above. [6] It was not until the Discovery episode "Brother" that the launch year of Enterprise was confirmed in canon on a graphic display.

3 There may only be twelve Constitution-class ships as of the first season episode "Tomorrow is Yesterday", but the line this was drawn from ("there are only twelve like it in the fleet") has given rise to speculation that the Enterprise should be excluded from the count, meaning there could be thirteen Constitution-class ships as of that date. The twelve ship assertion was actually supported by production sources, as The Making of Star Trek (pp. 163, 203) clearly stated that, as far as the production staff was concerned, the intent was that there were twelve operational ships of the class foreseen for the second season by the time of its production, the Enterprise included and taking into account the two ships, USS Valiant and USS Farragut, already established as being destroyed in the first season episode "A Taste of Armageddon", and already foreseen as mentioned destroyed in the second season episode "Obsession", respectively. Kirk's statement then neatly corresponded with the twelve ship assumption; two, the Farragut and Valiant, presumed destroyed before the remark, with the USS Constellation (in "The Doomsday Machine", and already accounted for by D.C. Fontana in her memo version, though it was still in operation at the time of "Tomorrow is Yesterday" canonically) and USS Intrepid (in "The Immunity Syndrome") being destroyed after the remark. It should be noted that the inclusion of the Valiant was a late addition and that it was not even considered in the first two proposals. This, canonically speaking at least, constituted somewhat of a conundrum, an observation not lost on Greg Jein, as he had noted that the ship in question was already destroyed in 2217, whereas the Constitutions only became operational a decade later as far as was established by the producers. [7] While another, new ship would have made more sense, the intent of the producers was clear, the class was retro-applied to the lost ship. Yet, the twelve ship statement only held true under the supposition that the Defiant – not foreseen by the producers – had not yet been commissioned, which is open to debate; otherwise, and this was implied by the fact that the ship was already fully operational less than a year later, the thirteen ship number became valid. And indeed, this only became firmly established – and thus canon – when Defiant was in dialog mentioned operational as early as 2256 in the 2018 Discovery episode "Despite Yourself", meaning that Defiant was not even a recent class addition, but actually one of the older class vessels, its highest onscreen established Original Series-era registry, as devised by Jein, notwithstanding. The teleplay writers for ENT: "In a Mirror, Darkly" on the other hand, had already adopted Jein's reasoning with the inclusion of a script note in the final draft script which read, "We'll suggest the Defiant is a slightly newer vessel than Kirk’s ship; the exterior shows slightly more detail...".

After some corresponding with suggestions to and fro, the definitive name list of vessels belonging to the, then still called Starship-class, was agreed upon by the producers (dutifully carried over to the decal sheet of AMT's 1968 re-issue USS Enterprise model kit) at the start of the series' second season, and comprised the following vessels (The Making of Star Trek, pp. 164-165):

D.C. Fontana's[2] proposal 8 August 1967

  • Enterprise
  • Exeter
  • Essex
  • Excalibur
  • Lexington
  • Yorktown
  • Endeavor
  • El Dorado
  • Excelsior
  • Saratoga
  • Constellation (destroyed in "Doomsday Machine." Presume she would be replaced by Starfleet)
  • Hornet
  • Wasp
  • Farragut (mentioned as destroyed in "Obsession")
  • Hood
  • Bonhomme Richard
  • Monitor or Merrimac, depending upon your loyalties
  • Tori ("bird" [note: in Japanese])
  • Lafayette
  • Ari ("lion" [note: in Hebrew])
  • Krieger ("warrior" [note: in German])

Bob Justman's[3] proposal 9 August 1967

  • Enterprise
  • Essex[4]
  • Excalibur
  • Lexington
  • Yorktown
  • Endeavor
  • Eagle[4]
  • Constellation
  • Hornet
  • Wasp
  • Lafayette

Definitive list as utilized at the start of TOS Season 2

  • Enterprise
  • Exeter
  • Excalibur
  • Lexington
  • Yorktown
  • Potemkin
  • Republic
  • Hood
  • Constitution[5]
  • Kongo[5]
  • Constellation
  • Farragut
  • Valiant
  • Intrepid
Remarks:
  1. Star Trek VI: The Undiscovered Country
  2. Aside from the remarks behind several of the names, Fontana further annotated on her memo,"Alternates include the names of some famous fighting ships of the past, plus a couple of international variations we might consider, Star Fleet being composed of a united service."
  3. Justman noted in his memo, "I think there would be several other candidates, such as Saratoga and perhaps another English carrier, a French carrier, a Russian carrier and certainly a Japanese carrier [note: though the ultimately chosen Kongo was in reality a World War I and II -era Japanese battleship, as were the British HMS Hood and Russian