There was no recorded wreck at this site so it was documented to your related authorities, including the Receiver of your Wreck (RoW). U-31 evaded a spread of four torpedoes fired by HMS Trident about fifteen miles (24 km) south of Lorient and was then forced to dive when fired https://u3133220.total-blog.com/the-best-side-of-u31-57574766