There was no recorded wreck at this place so it was claimed on the pertinent authorities, such as the Receiver in the Wreck (RoW). They ended up regarded superb boats. During the war eight were sunk, 3 surrendered and were finally scrapped, and two have been regarded as missing. Now https://u3126813.blogscribble.com/32358814/the-definitive-guide-to-u31