There was no recorded wreck at this area so it was noted to your suitable authorities, including the Receiver of your 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://u3191864.total-blog.com/the-smart-trick-of-u31-that-nobody-is-discussing-59371877