Skidbladnir is the name of a ship. The greatest of ships in all of Norse myth.
It was owned by the gods, could fold up smaller than a sheet of paper, hold the entire host of gods and enough food to last them a year, answered to spoken commands, and navigate itself.
But if you weren't entirely a god, it had a nasty habit of kicking you off.
The man behind the nickname doesn't actually like boats, he just liked the stories the boat showed up in.