The Nimitz-class strike carriers were a type of United Federation of Planets starship on active duty in Starfleet during at least the late 23rd century. (Task Force Games: UFP: The Federation Sourcebook for Prime Directive)
Outwardly similar in appearance on Constitution-class heavy cruisers, the Nimitzes were built during the General War (in the Star Fleet Battles timeline) in 2278. The larger rear hull holds a full squadron of attack fighters. As mainline combat vessels, carriers did not have Prime Teams assigned on a regular basis.
The standard crew complement of a Nimitz was 395 plus 64 surface action specialists.
The Pac-Men fielded Nimitzes as late as 2385. (RIS Bouteina: "Battle at the Grave of Thoughts")
Background[]
These ships appeared in the TOS video game Starfleet Command II and were classified as CVs. Like the current Nimitz class carriers there were 12 in the fleet and one was a flagship named Lexington (Blue Ghost). The class was named after Admiral Nimitz, who went on to lead the US Pacific Fleet in its march against Japan. The admiral and captains for this series were no less capable and from humble backgrounds.