There was no recorded wreck at this location so it was claimed to the appropriate authorities, including the Receiver in the Wreck (RoW). U-31 evaded a spread of 4 torpedoes fired by HMS Trident about 15 miles (24 km) south of Lorient and was then forced to dive when fired https://knoxjnkhc.bloggosite.com/41061351/u31-an-overview