K. Kruizer III
From the Super Mario Wiki
The K. Kruizer III is an airship owned by King K. Rool in DK: King of Swing, the third in a long line of aircrafts built by him and the Kremling Krew. It is also the final world in the game, containing four levels plus a boss level.
The interior of the K. Kruizer III is full of weapons, security devices, and Kremlings. It includes an Artillery with a Silver Medal, a Hull with a Gold Medal, and an Engine with another Gold Medal. Lastly, the player meets K. Rool, who challenges them to a race. The player has to beat him in this race to convince the crocodile to challenge Donkey Kong or Diddy Kong to a battle. When he is defeated in the battle, K. Rool hands over the final Medal. It is unknown what happens to the K. Kruizer III after it is completed.
The K. Kruizer III was preceded by the King Kruiser II from Donkey Kong 64, and the original Flying Krock from Donkey Kong Country 2: Diddy's Kong Quest and Donkey Kong Land 2. The K. Kruizer III was succeeded by the King Kruiser IV from DK: Jungle Climber.