There was no recorded wreck at this site so it was reported for the relevant authorities, including the Receiver in the Wreck (RoW). U-31 evaded a spread of four torpedoes fired by HMS Trident about 15 miles (24 km) south of Lorient and was then forced to dive when fired https://u3137753.blogpostie.com/55611395/the-definitive-guide-to-u31