There was no recorded wreck at this location so it had been claimed for the related authorities, such as the Receiver with the Wreck (RoW). They ended up deemed excellent boats. In the course of the war 8 had been sunk, 3 surrendered and were being sooner or later scrapped, https://daltonwixlx.theideasblog.com/34636461/details-fiction-and-u31