Warships are part of the Robo-Pirates' gravity-defying fleet in Rayman 2: The Great Escape and its remakes, Rayman Revolution and Rayman DS. There are several Warships; in one cutscene, they are seen departing from the Buccaneer, which they seem to have been stored inside.

A Warship, as seen at the end of the Echoing Caves
Rayman piloting a warship to free the baby Globoxes from the mines

Warships are seen in several levels, including the Bayou, the Canopy, the Precipice and the Echoing Caves. In the Iron Mountains (the Pirate Mines in Revolution), Rayman must commandeer a Warship, and use it to free the baby Globoxes from captivity in the mines.

A Warship hologram is used to represent the Precipice in the Hall of Doors

Warships can also be found in the Precipice in Raymn 2: Forever. They don't move in this version.

A Warship in the GBC adaptation of Rayman 2