The USS Chagaris was a Federation Miranda-class cruiser starship in service to Starfleet during the late 23rd century.
The Chagaris was used in the elite Klingon Command Academy bridge crew training simulations for the Class of 2290. As such, she was encountered in the Regulus star system in a simulated mission, in company with the USS Salazar, USS Ranger, USS Hartt and USS Concord. (TOS video game: Klingon Academy)