USS Lexington (NCC-1709)

The USS Lexington (NCC-1709) was one of the first twelve Constitution class starships produced. Under the command of Commodore Robert Wesley, it is best known for its participation, along with the Excalibur, Potemkin, and Hood, in the disastrous war game test trials of the experimental M-5 computer in 2268 as seen in the TOS episode, "The Ultimate Computer" (Memory Alpha).

Star Trek: Lexington Continuity''
In David Falkayn's Star Trek: Lexington fan fiction series, Commodore Robert Wesley took command of the USS Lexington in 2265 shortly after the events taking place in the TOS series "Where No Man Has Gone Before", replacing Heihachiro Nogura who had just been promoted to Admiral and reassigned to Star Fleet Command.

Now on its maiden voyage with its new commanding officer and crew, the Lexington seeks to carve out its own reputation on the wild frontier of the expanding Federation.

Early History
Coming soon

2265
Investigating the disappearance of the scout-ship, Voltaire, the Lexington has a confrontation with a Klingon battlecruiser in a mysterious nebula. Meet the Lady