(covers information from several alternate timelines)
In an alternate timeline where Earth was destroyed by the Xindi, the Intrepid was one of a few Starfleet vessels to escape destruction. It, along with Enterprise and one other Starfleet vessel, escorted a convoy of the last six thousand Humans to the Ceti Alpha system in 2155-56, and helped patrol the system afterwards. In 2165, the Intrepid suffered heavy damage, including the loss of its port nacelle, in a Xindi attack just before Commander Malcolm Reed would have taken over command of the Intrepid from Ramirez. This timeline was later negated by the eradication of interspatial parasites that had infected Jonathan Archer's brain. (ENT: "Twilight")
- See: Intrepid personnel
|Starships named Intrepid|
|Intrepid • USS Intrepid (NCC-1631) • USS Intrepid (NCC-38907) • USS Intrepid (NCC-74600)|
Regarding the lack of registry or name on the primary hull, CGI renderer Robert Bonchune stated that "the model is kinda medium-lo quality as it was never built to get close, so it was built/textured accordingly. I also lit her very plainly so you could see the details."  For more information on the ship's model, see Intrepid type.
During the writing of "Twilight", the Intrepid replaced Columbia in the episode's script. According to Mike Sussman, the ship was rewritten as the Intrepid "because I knew the Intrepid had been established in an earlier episode, and I wanted to see specifically that model." ("Twilight" audio commentary, ENT Season 3 Blu-ray special features)
In "Twilight", the Intrepid is shown losing its port nacelle. This footage was not originally scripted, though. Originally, a line of dialogue was meant to deliver this information; however, the effect was deemed to carry a greater impact to the audience, so it was included in the final edit of "Twilight", along with the dialogue addressing the plot point.
The Intrepid's mission patch appeared in "The Expanse", on Captain Ramirez's shoulder patch. The motto on the mission patch translates as "In the sea, in the sky." The mission patch was designed by Scenic Art Supervisor Michael Okuda. He based the patch design and motto on those of the US Navy's Essex-class carrier USS Intrepid (CV-11). (Star Trek: Costumes: Five Decades of Fashion from the Final Frontier, p. 217)