Well, that's a mouthful -- The Klaboutermannikin are said to inhabit the figureheads of ships, giving them guidance and protection. In the event that a ship with a klaboutermannikin does go down, the klaboutermannikin goes down into the sea with the drowned to aid their souls in reaching their proper afterlife.
I suppose if I have an ocean in my Fairy Land where the Irish Sea Guardians can play, it would make sense that there would be ships. Having a Klaboutermannikin for protection would not be a bad thing. Though I'd probably change the name to something less of a mouthful.