The IKS Gra'gesh was a Klingon D5 class battle cruiser that saw service with the Klingon Defense Force during the 23rd century. (Ship Recognition Manual, Volume 4: Starships of the Original Series Era) In 2233, the Gra'gesh destroyed or crippled five Starfleet vessels during the Battle of the Yosaan Cloud before it was destroyed by a warp core breach.