Ghost Pirates of the Sea-erra Madre

You order the ship turned to port and soon you seem to be heading deeper into the fog. Soon the lights seem to gather in one place and out of the fog you see a old fashioned galleon appear. Despite the age of the design of the ship it seems to be in pretty good condition, though you can't see anyone on board.

Someone on your crew cries out that it's the S.S. Thrombey! A ship that was captured by pirates before eventually being set on fire during a battle hundreds of years ago. They say that the mysterious ghost ship appears only once ever 79 years and that any that approach it are doomed to be lost at sea forever.

Being lost at sea forever doesn't sound great, but a ghost ship sounds pretty exciting too.