"Knightboat", or "Knightboat: The Crime Solving Boat", is a TV show involving a hi-tech boat with Artificial Intelligence partnering with a character named Michael to fight crime. Bart and Lisa mention that whenever the villains escape onto land there is always an inlet, canal or fjord for Knightboat to catch up.
Behind the Laughter
Knightboat is a parody of the show Knight Rider, which has a hi-tech A.I. car named KITT. It may also be a parody of the Hulk Hogan show Thunder in Paradise.