There was no recorded wreck at this place so it absolutely was noted for the appropriate authorities, including the Receiver in the Wreck (RoW). They ended up regarded as superb boats. Over the war 8 ended up sunk, 3 surrendered and have been finally scrapped, and two ended up viewed https://u3122119.shotblogs.com/not-known-factual-statements-about-u31-48084525