She was depth - charged by HMS Icarus , causing her crew to abandon her .
U-744 was forced to surface on 6 March 1944 , after a 31 - hour pursuit by British and Canadian ships .
U-744 was depth - charged by HMS Icarus , causing U-744 's crew to abandon her .
U-744 was forced to surface on 6 March 1944 , after a 31 - hour pursuit by British and Canadian ships .