HMCS Melville was a Bangor-class minesweeper built for the Royal Canadian Navy in 1940, notable for being the first diesel-powered vessel of its class. The ship measured 162 feet (49 meters) in length, with a beam of 28 feet (8.5 meters) and a draught of 8 feet 3 inches (2.51 meters). Displacing approximately 592 long tons (601 tonnes) at standard load and up to 690 long tons (700 tonnes) fully loaded, Melville was designed as a scaled-down minesweeper based on the Royal Navy’s Halcyon class, though its small size led to criticisms of being cramped, especially after wartime modifications. Powered by a 9-cylinder diesel engine driving two shafts, Melville produced 2,000 brake horsepower, which allowed for a maximum speed of 16.5 knots (30.6 km/h). Her armament included a single quick-firing (QF) 4-inch (102 mm)/40 caliber Mk IV gun mounted forward, a QF 2-pounder Mark VIII gun aft, and later, single-mounted QF 20 mm Oerlikon guns on the bridge wings. For convoy escort duties, she was fitted with two depth charge launchers and chutes capable of carrying 40 depth charges. Laid down on 17 December 1940 by Davie Shipbuilding in Lauzon, Quebec, Melville was launched on 7 June 1941 and commissioned on 4 December 1941. She served primarily in the Atlantic, initially with the Western Local Escort Force, then with Shelburne Force, before returning to WLEF. After a major refit from February to June 1943, she joined Sydney Force, remaining with this unit until June 1945. Melville was paid off on 18 August 1945. Post-war, the vessel was transferred to the Royal Canadian Mounted Police in 1946, converted into a fisheries patrol vessel, and renamed Cygnus in 1950. She served until 1961, when she was sold for scrap and dismantled. Melville’s service highlights her role in Atlantic convoy protection during WWII and her later contribution to fisheries enforcement, marking her as an important vessel in Canadian maritime history.

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