|Owner:||United Federation of Planets|
In 2268, the Lexington, under the command of Commodore Robert Wesley, rendezvoused with the USS Enterprise at Starbase 6 to inform Captain James T. Kirk that the Enterprise was to participate in the M-5 computer war games. It was in these war games that the Lexington served as the flagship of the four-ship task force (USS Lexington, USS Excalibur, USS Hood, USS Potemkin) that was opposing the Enterprise.
The simulation began with the Lexington and the Excalibur engaging the Enterprise near the Alpha Carinae system in an unscheduled battle to test the M-5's reaction to a surprise attack. After-action analysis, based on the quantity and quality of hits on the Lexington, indicated that the Enterprise, directed by the M-5, had been victorious.
Later, when the M-5 became unstable, the Lexington was hit multiple times by full-powered phasers from the Enterprise in the engineering section, damaging impulse engines and leaving her maneuverable only on warp drive. Fifty-three of her crew were killed.
When the Excalibur's entire crew was killed and she was left adrift by the M-5, Wesley requested and received permission to destroy the Enterprise with the remainder of his damaged ships. However, the M-5 was deactivated before this could be carried out. (TOS: "The Ultimate Computer")
|USS Ahwahnee • USS Constellation • USS Defiant • USS Eagle • USS Emden • USS Endeavour • USS Enterprise • USS Enterprise-A • USS Excalibur • USS Exeter • USS Hood • USS Intrepid • USS Korolev • USS Lexington • USS Potemkin • NCC-1700 • NCC-1707 • Unnamed|
|Mirror universe: ISS Enterprise|
|Alternate timeline: USS Enterprise|
Greg Jein's article The Case of Jonathan Doe Starship was the first work to assign the NCC-1709 registry number to this ship. The Star Trek Encyclopedia continued to keep the two connected. This connect would finally be made a reality in the remastered version of "The Ultimate Computer".
The Lexington was named for the first battle of the American Revolution, and the series of United States Naval vessels named "Lexington". (Star Trek Encyclopedia 2nd ed., p. 264)
According to the reference work Ships of the Line (page 86), the Lexington went through the same refitting process as her sister ship, the Enterprise.