He's back DK! King K. Rool's island is just over there!
~ Squawks in Donkey Kong 64.

K. Rool's Mobile Island Fortress is a King K. Rool's junk and fragile naval fortress with the ship's structure resembling K. Rool's face and crown. It is a location in Donkey Kong 64. It is also known as the "Crocodile Rock" and "K. Rool's Fortress".

The boat has an engine and can be moved through the sea with its two ship's screws. The base is operated and mainly serviced by Kritters, although in some cutscenes they are shown to have little knowledge about the machinery and mainly use force to keep the base operational. The boat is comprised of 4 lobbies and Blast-O-Matic is installed on the thorax. The K. Rool's brother K. Lumsy is captive from island is also attached to it and last world of the game and Hideout Helm is located at the top of the Kremling base. After of K. Rool's defeated, this boat it is missing during the credits sequence, and as there is no wreckage it is thought to have retreated from DK Isles.