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Spacedock One was a Federation Spacedock-type space station operated by Starfleet from the late 23rd to the early 25th centuries. The prototypical example of a "spacedock", it was located in orbit of Earth for most of its service.


Earth and Spacedock, 2257

Spacedock under construction

Spacedock One was under construction in 2257. (DIS: "Will You Take My Hand?")

By 2285, Spacedock One was completed and fully operational. (Star Trek III: The Search for Spock)

In 2285, the USS Enterprise returned to Spacedock One after serving as a cadet training ship on an ill-fated mission in which Khan's plan to steal the Genesis Device and kill Admiral James T. Kirk for revenge was thwarted. At Spacedock One, the Enterprise was to be decommissioned, rather than repaired. Kirk – with the help of Captain Scott as well as Commanders Uhura, Sulu and Chekovstole the Enterprise to rescue Spock's body from the Genesis Planet. The USS Excelsior attempted to give chase, but had been sabotaged by Captain Scott, and "stalled" when it attempted to jump to transwarp just outside the station. (Star Trek III: The Search for Spock)

Spacedock One without power

Due to an unknown probe, Spacedock One is without power

In 2286, an unknown probe entirely disabled Spacedock One upon reaching Earth. The shutdown happened before any vessels within, including the Excelsior, could be launched, resulting in the equally powerless vessels being trapped behind the space doors. When Kirk and his crew had resolved the crisis, power was restored as the probe left the planet. Kirk was demoted to captain, and offered command of a starship – namely the USS Enterprise-A, which was docked within Spacedock One. (Star Trek IV: The Voyage Home)

After a brief shakedown cruise, the Enterprise-A returned to Spacedock One while Captain Scott worked to resolve design flaws made apparent by the ship's maiden voyage. In 2287 the starship ultimately departed in a hurry, while repairs were still underway, to deal with the crisis on Nimbus III, with the final shuttlecraft carrying the command crew back from shore leave rendezvousing with the ship after it had cleared the station. (Star Trek V: The Final Frontier)

Spacedock One, 2293

The USS Enterprise-A departing from Spacedock in 2293

The Enterprise-A was moored at Spacedock One prior to an ill-fated trip to escort Klingon Chancellor Gorkon to a peace conference on Earth in 2293. Kirk ordered a departure from the facility at impulse speed, despite the fact that regulations specified thrusters only while inside the structure. Although Lieutenant Valeris, the ship's helmsman, initially questioned the captain's order, she successfully performed the departure and later admitted she had "always wanted to try that."

Following the Khitomer Conference, the Enterprise-A was to return to Spacedock One to be decommissioned by the orders of Starfleet Command. (Star Trek VI: The Undiscovered Country)

In an alternate timeline, Harry Kim and Tom Paris stole the prototype runabout USS Yellowstone from Spacedock One in 2372. (VOY: "Non Sequitur")

Captain Carol Freeman of the USS Cerritos once escorted the USS Enterprise out of Spacedock One. (LD: "An Embarrassment Of Dooplers")

By 2401, Spacedock One had been retired from service and moved to Athan Prime to house the Fleet Museum. It was replaced by the larger and more advanced Sol Station, which was also commonly referred to as "Spacedock". (PIC: "The Bounty")




Background information[]

Spacedock One sketch

Spacedock concept sketch

Spacedock One, production fact sheet

Production fact sheet

In script sources, this facility is most commonly known simply as "Spacedock", with an emphasis on the term being capitalized.

In one concept sketch that Industrial Light & Magic created for Spacedock, the facility had a registry number of NC-7011S. (Star Trek: The Magazine Volume 3, Issue 8, p. 49)

Spacedock was imagined as having a total height of over three miles. At that size, the facility could easily be visible with the naked eye from the surface of Earth. (text commentary, Star Trek III: The Search for Spock (Special Edition), DVD) This is corroborated with the specs released by Dave Blass, which gave the dimensions of the station as 3810 meters (2.4 miles) in diameter and 5795 meters (3.6 miles) in height. [1]

Although windows providing a view of Spacedock's interior docking bay appear only in Star Trek III: The Search for Spock, they were also originally intended to be seen in Star Trek IV: The Voyage Home as well, with cheering audience members gathered by them. (The Making of the Trek Films, 3rd ed., p. 64)

It was not made clear on-screen whether the facility featured in "Non Sequitur" was intended to be the same spacedock as seen in the films, as the Star Trek Encyclopedia speculates. The only view of the station in the Star Trek: Voyager episode is of a set of doors, themselves stock footage of the Dyson sphere doors from Star Trek: The Next Generation's "Relics".

In response to a question on Twitter, Dave Blass stated that the station was moved from its original location to Athan Prime via the use of "warp tugs". [2]


Star Trek: Starship Spotter describes Earth's Spacedock, the first of its design, as being conceived during conflicts with the Klingon Empire, approved in 2259, and completed in 2276, with enlargements to two entry doors in the mid-24th century to accommodate larger vessels such as the Galaxy-class. Their specifications, as of 2290, include an overall length of 4,600 meters, overall beam of 4,600 meters, overall draft of 6,900-6,950 meters, crew complement of 76,625 (crew, civilians and transients.) Typical support craft include 285 workbees, 100 shuttlecraft of various types, and 50 Danube-class runabouts. (pp. 72-73)

For the month of December in the 2010 Star Trek: Ships of the Line calendar, Spacedock is shown being constructed as the USS Enterprise's 2270s refit is nearing completion.

In an alternate timeline depicted in the game Star Trek: Armada, the Borg either destroyed or assimilated Spacedock.

In the game Star Trek Online, this station was replaced with another sometime before the year 2409. However, the new design was not popular amongst players, and there were many calls for it to be replaced with the classic facility. For STO's first anniversary, on 2 February 2011, the developers replaced the new Spacedock with the original station, explaining it as being the work of Q. Though the external model, as visible from space, appeared to be the classic Spacedock, the interior area, which served as a major player hub, remained based on the original, launch design. With the release of the game's Season 9 update, the Earth Spacedock received a second revamp to correct that inconsistency, with the interior area receiving a major redesign to be more appropriate to the scale and presumed layout of the station. The change was justified in the story via the mission "Surface Tension", in which the Undine caused severe damage to the station during their attack on Earth, necessitating extensive repairs and relocation of player activities to a different area.

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