The IKV Sub was a D7-class Klingon battle cruiser starship, specifically of the K't'inga-class, in Imperial Defense Force service in the late 24th century. (TNG video game: Starfleet Command III)
- This ship's name and its prefix were part of the list of names the game software assigned to K't'inga vessels appearing therein.
- According to The Klingon Dictionary, the word "Sub" is a tlhIngan Hol language term translating as "solid".