There was no recorded wreck at this spot so it was claimed to the pertinent authorities, including the Receiver from the Wreck (RoW). They had been thought of great boats. Through the war 8 have been sunk, three surrendered and have been ultimately scrapped, and two ended up deemed lacking. https://u3170011.bloggerswise.com/41528554/the-smart-trick-of-u31-that-nobody-is-discussing