The IKS Pagh was a K'Vort-class battle cruiser in service to the Imperial Klingon Defense Force in the mid-to-late 24th century. Throughout the 2360s and 2370s, the Pagh was commanded by Captain Kargan. In 2365, Commander William T. Riker boarded the Pagh to serve as first officer during an officer exchange program between the Empire and Starfleet. During his time aboard, the Pagh came under attack from a previously unknown sub-atomic lifeform. (TNG: "A Matter of Honor"; Ship Recognition Manual, Volume 1: The Ships of Starfleet)