There was no recorded wreck at this place so it was described into the related authorities, including the Receiver of the Wreck (RoW). U-31 evaded a distribute of 4 torpedoes fired by HMS Trident about 15 miles (24 km) south of Lorient and was then forced to dive when fired https://u3180888.getblogs.net/66735720/u31-no-further-a-mystery