Manfish

Devil may care adventurer Brannigan has won the ship Manfish and its first mate Swede in a poker game. He is attracted to a woman sitting with an older man called "the Professor" during a drunken evening out. The two brawling over her. The next day the Manfish is at sea engaging in a turtle hunt. Two divers from the ship find a skeleton underwater holding a bottle. He breaks it open on board finding a ripped piece of paper dated 1793. Inside the bottle is the same ring that the Professor wears.