HMS Ossory was an Algerine-class minesweeper powered by reciprocating engines, built for the Royal Navy during World War II. She was constructed by the Port Arthur Shipbuilding Co. in Thunder Bay, Ontario, with her keel laid on November 20, 1943. Launched on October 3, 1944, and completed by September 29, 1945, her commissioning occurred too late to participate in the wartime conflict. The vessel measured approximately 225 feet (68.6 meters) in length overall, with a beam of 35 feet 6 inches (10.8 meters) and a draught of 12 feet 3 inches (3.7 meters). She displaced between 1,010 and 1,030 long tons at standard load and up to 1,325 long tons at deep load. Her crew comprised 85 officers and ratings. HMS Ossory was equipped with two vertical triple-expansion steam engines, each driving a single shaft, powered by two Admiralty three-drum boilers. These engines produced 2,400 indicated horsepower, allowing her to reach a top speed of 16.5 knots. She carried a maximum of 660 long tons of fuel oil, giving her an operational range of 5,000 nautical miles at 10 knots. Armament on HMS Ossory included a single QF 4-inch (102 mm) Mk V anti-aircraft gun and four twin-gun mounts for Oerlikon 20 mm cannon. Due to shortages during construction, some ships initially mounted single Oerlikon guns, but by 1944, these were replaced with twin Bofors 40 mm mounts. She was also fitted with four throwers and two rails for depth charges, essential for minesweeping and anti-submarine duties. Although HMS Ossory did not serve in World War II, she joined the 4th Minesweeping Flotilla in January 1946 and later served in the Fishery Protection Squadron from 1946 to 1947. She was reduced to reserve at Portsmouth in 1948 and remained in reserve until she was scrapped at Troon, Scotland, beginning on March 4, 1959. Her service during the Cold War period highlights her role in post-war minesweeping and patrol duties.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.