U-859 sailed on 4 April 1944 with a cargo of mercury and sank the 6,300-ton Panamanian freighter Colin, the 7,200-ton American Liberty ship John Berry and the 7,400-ton British freighter Troilus before being torpedoed off Penang by HMS Trenchant on 23 September [REF].
U-871 sailed on 31 August 1944 and was sunk by a RAF B-17 on 26 September 1944 [REF].