There was no recorded wreck at this site so it was reported into the suitable authorities, including the Receiver on 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 compelled to dive when fired https://jasperbkeay.59bloggers.com/34589298/the-basic-principles-of-u31