HMS Una
HMS "Una" was a British U-class submarine, of the second group of that class, built at Chatham Dockyard. She was laid down on 7 May 1940 and was commissioned on 27 September 1941. Career. She spent most of her career operating in the Mediterranean from early 1942, where she sank the Italian tanker "Luciana", the Italian fishing vessel "Maria Immacolata", and the Italian merchants and "Petrarca". Controversially, the "Lucania" was a tanker which had been granted immunity by the Admiralty, as she was to serve as a replenishment ship for an Italian ship repatriating civilians from East  Africa; the submarine's commander, Lieutenant D.S.R. Martin, was ill and had not read the Admiralty signal before departure. She also damaged two sailing vessels and the Italian merchant "Cosala" (the former Yugoslavian "Serafin Topic"). The damaged Italian ship was grounded, but declared a total loss and eventually sank during a storm. She was unlucky on numerous occasions, unsuccessfully attacking the Italian merchant "Brioni", the Italian tanker "Panuco" and the German merchant "Menes". "Una" also fired torpedoes against a merchant in Lampedusa harbour. The torpedoes however hit the rocks. From April to August 1943, she was used for Anti-Submarine  training after undergoing a refit in the UK. After the end of the war, she was decommissioned and placed in reserve in November 1945. She was sold to be broken up for scrap on 11 April 1949 and scrapped at Llanelly.