Tradition: Breton Mythology, French Mythology
Alternative names: —
Category: Demon
The Myth
The Bosch is a supernatural creature believed to arise from theft committed aboard a ship. It has no fixed appearance and may take different forms depending on the nature of the crime that created it. Once born, it hides in the bow of the vessel and brings persistent misfortune to the crew.
A Bosch may survive for several months or even several years before gradually weakening and disappearing. While it remains aboard, the ship’s nets stay empty, favorable winds fail to appear, and misfortune continually afflicts the sailors.
In the Audierne region, maritime theft was paradoxically regarded as a source of good luck for the thief, because the Bosch created by the theft would remain behind on the ship. Elsewhere in Finistère, however, such supernatural consequences were regarded as a serious danger. Evil spirits could arise from acts of greed and wrongdoing aboard ships, making it necessary to fumigate a vessel before putting out to sea. The spirits were believed capable of becoming small enough to hide inside a thimble, so smoke had to reach every part of the ship.
There were two known ways to rid a vessel of a Bosch.
The first was to transfer it to another ship. The captain would identify a fortunate vessel whose crew enjoyed plentiful catches and good fortune. During the night, he would secretly board it and steal a small object, usually a pair of oarlocks. The Bosch would then leave its original ship and attach itself to the newly afflicted vessel.
The second method was to drive the creature into the sea. The captain would secretly steal some hay and hide it aboard the ship. At night, the hay would be set on fire near the mizzenmast while the captain shouted that there was a devil aboard.
The sailors, startled by the alarm, would seize whatever they could find and begin striking wildly around the vessel, beating every corner in an attempt to drive the supposed demon out. Faced with the smoke, flames, and blows, the Bosch would eventually flee into the sea, freeing the ship from its curse.
Sources
Countess Sica. “Bosch.” A Book of Creatures. July 8, 2015. https://abookofcreatures.com/2015/07/08/bosch/