MS Armed Trawler Annet was an Isle Class Trawler, pennant T341, constructed by C D Holmes & Co. Laid down 21s December 1942, launched 25th March 1943 and commisison 19th June 1943. Her gross tonnage was 494grt. The Isles class trawlers were a class of trawler used by the Royal Navy and Royal Canadian Navy during World War II. 168 units of this class were bullt between 1940 and 1945. They were mainly used on minesweeping and habour defence duties. Twelve Isles class trawlers were lost during the war. She was acquired by the Department of Fisheries in 1956 and later that year she was commisisoned and named ULVA to replace the vessel VAILA, She was employed on fishery protection duties until she was withdrawn from service in 1971 and laid-up. In 1972 she was broken up at Famuir, Glasgow, by W H Arnott, Young & Co (Shipbreakers) Ltd.