The Jach'Eng-class was a type of Klingon starship in Imperial Klingon Defense Force service in the 24th century (despite a treaty that bans subspace weapons). It is meant to be a suicide ship. When activated, the ship is destroyed and a shockwave is unleased from the front of the ship. The shockwave destroys everything in its path. (TNG video games: Armada, Armada II)