HMCS Canso (pennant J21) was a Bangor-class minesweeper constructed during World War II, distinguished by its size and design as a smaller British vessel with a notable service record. Built by North Vancouver Ship Repairs, her keel was laid on 30 December 1940, and she was launched on 9 June 1941. The ship measured 180 feet (54.9 meters) in length overall, with a beam of 28 feet 6 inches (8.7 meters) and a draught of 9 feet 9 inches (3.0 meters). Displacing approximately 672 long tons (683 tonnes), she was powered by two vertical triple-expansion steam engines, generating 2,400 indicated horsepower, which allowed her to reach a maximum speed of 16.5 knots (30.6 km/h). Her armament included a single 12-pounder (3-inch) anti-aircraft gun mounted forward, supplemented by a QF 2-pounder Mark VIII and two QF 20 mm Oerlikon guns, later upgraded to a twin mount. Canso was also equipped with 40 depth charges for anti-submarine warfare, launched from two throwers and four chutes, underscoring her role as a convoy escort and patrol vessel. Commissioned into the Royal Canadian Navy on 5 March 1942, Canso initially served on the West Coast of Canada with Esquimalt Force, patrolling and escorting convoys along Vancouver Island, inlets, and the Queen Charlotte Strait. In August 1943, she transferred to the Atlantic, joining Halifax Force, before participating in the European theater. She played a significant role during the Normandy invasion, assigned to the 16th Minesweeping Flotilla, where she conducted assault minesweeping operations on D-Day, clearing channels for Allied landings and ensuring safe passage for ships including the cruiser HMS Arethusa. Following refits and additional operations in the Gironde estuary, Canso spent the final months sweeping the English Channel. After the war, she was paid off on 24 September 1945, returned to the Royal Navy, and was laid up at Sheerness. Ultimately, she was sold for scrap in 1948, marking the end of her service. Her contributions to Allied naval efforts in both the Pacific and European theaters highlight her maritime significance during WWII.

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