There was no recorded wreck at this site so it had been noted into the relevant authorities, including the Receiver with the Wreck (RoW). They were regarded as superb boats. Throughout the war 8 were being sunk, three surrendered and were at some point scrapped, and two had been considered https://u3167252.is-blog.com/40658435/the-smart-trick-of-u31-that-no-one-is-discussing