HMCS Bonaventure was a Majestic-class aircraft carrier serving with the Royal Canadian Navy from 1957 to 1970. Originally laid down as HMS Powerful for the Royal Navy during World War II, construction was halted after the war's end and the hull remained incomplete until 1952, when the Canadian government purchased and transferred it to Belfast’s Harland & Wolff shipyard for modernization. The ship was then completed to a revised design as part of the Majestic subclass, measuring 704 feet (214.6 meters) in length with a beam of 128 feet (39 meters) and a draught of 25 feet (7.6 meters). Its standard displacement was 16,000 long tons, increasing to 20,000 long tons at full load. Propulsion was provided by two geared steam turbines powered by four Admiralty three-drum boilers, generating 40,000 shaft horsepower, allowing a maximum speed of approximately 24.5 knots. Bonaventure’s armament included four twin 3-inch/50-calibre Mk 33 guns and four single 3-pounder saluting guns, with notable features such as a tall lattice mast, raked funnel, and a large sponson. The ship was equipped with U.S. Navy radar systems, including SPS-8A height finder and SPS-12 air search radar. Her design incorporated advanced aviation technologies, such as an angled flight deck, steam catapults, and optical landing systems, enabling the launch and recovery of larger aircraft weighing up to 24,000 pounds. Her air wing initially comprised 16 McDonnell F2H Banshee jet fighters, 8 Grumman Tracker anti-submarine aircraft, and Sikorsky HO4S helicopters. Over her service, Bonaventure conducted NATO patrols, naval exercises, and played a role during the Cuban Missile Crisis. She was instrumental in anti-submarine warfare, with her air group evolving to focus solely on ASW after 1962, operating Tracker and Sea King helicopters. The vessel underwent a significant mid-life refit (1966-1967), extending her operational lifespan. Decommissioned in 1970, Bonaventure was sold for scrap in Taiwan, with parts reused in other ships, notably her steam catapult. Her legacy includes memorials such as the Bonaventure Anchor Memorial in Halifax, commemorating Canadian naval personnel lost at sea.

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