The story of a sea battle in the Irish Sea on 26 January 1945 resulting in the loss of HMS Manners and the U-Boat which attacked her. HMS Manners was commissioned as a destroyer escort to protect North Atlantic convoys and was launched in Boston in 1943. Sailing from Falmouth to Liverpool in January 1945, the ship was subjected to torpedo attack by U-Boat 1051 under the command of Oberleutnant Heinrick von Holleben. Damaged beyond repair and having lost more than half of her crew, HMS Manners was de-commissioned and sold for scrapping while U-Boat 1051 herself was sunk the same day as a result of the hunt and attack by Aylmer, Calder, Bligh and Bentinck. Appendices list British and German casualties and those injured as a result of the battle, the voyages of HMS Manners, and provide a chronology of the principal events in the Irish Sea during November 1944 to May 1945.