The Mark IV bridge simulator was a mock-up of the refitted bridge of a Constitution-class starship for use by Starfleet cadets in Starfleet Academy training missions, such as the Kobayashi Maru scenario. This bridge simulator was listed in a directory placard on the second floor of the Starfleet Training Command building. It was located in room 216.
Captain Spock had a class of cadets, under the command of Saavik, make use of the simulator (playing the role of the USS Enterprise) in 2285, joined by Starfleet officers Leonard McCoy, Hikaru Sulu, Uhura, and Montgomery Scott. Admiral James T. Kirk also visited the simulator to watch the cadets' performance on the Kobayashi Maru scenario. (Star Trek II: The Wrath of Khan)