There was no recorded wreck at this locale so it was reported to your suitable authorities, including the Receiver on the Wreck (RoW). U-31 evaded a unfold of 4 torpedoes fired by HMS Trident about 15 miles (24 km) south of Lorient and was then pressured to dive when fired https://u3189653.thekatyblog.com/31225083/rumored-buzz-on-u31