If you are sailing off the coast of Japan and the fog sweeps in, beware…you might be approached by a funa yurei.
The spirits of sailors who have died at sea, funa yurei sometimes try to sink boats and sometimes to snag an unlucky soul to take their own place on a ghostly ship. Often a funa yurei will demand a bucket or a ladle from its victims. If they refuse the ghost will sink their ship in vengeance. If given a bucket, the ghost will pour water into the ship, swamping it. How to get out of this hopeless situation? Hand the ghost a bucket or ladle with the bottom removed. It will futilely try to scoop water up with the bottomless vessel, leaving you free to sail quickly away.
(Kata, the heroine of Deadly Wish, did not know this trick. She was forced to try and come up with other ideas to defeat the funa yurei she encountered.)