Klaboterman
Klaboterman is a water sprite (or nix) who assists sailors and fishermen on the Baltic Sea in their duties. He is a merry and diligent creature, with an expert understanding of most watercraft, and an unsupressable musical talent. He also rescues sailors washed overboard.
His image is of a small sailor in yellow with a tobacco pipe and woolen sailor's cap. This likeness is carved and attached to the mast as a symbol of good luck.
Despite of the positive attributes, there is one omen associated with his presence: no member of a ship blessed by his presence shall ever set eyes on him. He only ever becomes visible to the crew of a doomed ship.
References
Melville, F The Book of Faeries 2002 Quarto Publishing
Categories: Fairy and sprite characters | Superstitions