The cruise ship was the site of a case Mystery Inc. solved on their way to Australia.
History[]
Scooby-Doo! and the Legend of the Vampire[]
While on their way to Australia for a vacation, the gang later got in cahoots with a group of monsters known as the Sea Serpent Smugglers, consisting of a peg leg captain, a walking shark creature and a monster made of kelp. They were chased around for a good bit until Shaggy and Scooby ran a separate way and came face to face with a large sea serpent, that ended up getting revealed to be just a balloon after Scooby popped the back portion of it, which caused them to fly through the air and crash on top of the three monsters just as they cornered Fred and the girls.
The incident, along with the criminals group name were later mentioned about on a newspaper.