The Red Pirate Crew Eternal Wind's ship. Quite old, but well-maintained and still fully operational. Its bow is adorned with an artifact called Meteor, serving as its guardian deity. In fact, it's a magical ship capable of warding off the curse of the underworld's waters and entering the underworld.

It's then shrunk into a bottleship using shrinking magic and transported to the lake that serves as the entrance to the underworld.