There was no recorded wreck at this site so it was described to the relevant authorities, including the Receiver of the Wreck (RoW). They have been considered excellent boats. Throughout the war 8 have been sunk, 3 surrendered and had been finally scrapped, and two were thought of missing. Now https://reidhakvc.blogsuperapp.com/34731866/the-2-minute-rule-for-u31