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Concept
HMCS Bonaventure
Summary
HMCS Bonaventure was a , the third and last aircraft carrier in service with Canada's navy. The aircraft carrier was initially ordered for construction by Britain's Royal Navy as HMS Powerful during the Second World War. Following the end of the war, construction on the ship was halted and it was not until 1952 that work began once again, this time to an altered design for the Royal Canadian Navy. The ship entered service in 1957 renamed Bonaventure and, until the vessel's decommissioning in 1970, was involved in major NATO fleet-at-sea patrols and naval exercises and participated in the Cuban Missile Crisis. During her career Bonaventure carried three hull identification numbers, RML 22, RRSM 22 and CVL 22. Following her decommissioning Bonaventure was sold for scrap and broken up in Taiwan.
Initially laid down as HMS Powerful as part of the second batch of the Colossus class during the Second World War, the vessel's construction was halted following the end of the war and the constructed hull was laid up. Powerful was purchased by the Royal Canadian Navy in 1952 and the hull was taken to the Harland & Wolff shipyard in Belfast, Northern Ireland, to be completed to a modernized design of the Majestic subclass. The ship measured long overall with a maximum beam of and a draught of . The vessel had a standard displacement of and at full load. Bonaventure was propelled by two geared steam turbines driving two shafts powered by steam from four Admiralty 3-drum boilers rated at . The steam pressure of the engines were rated at . The aircraft carrier had a maximum speed of and carried of fuel oil.
The ship had a complement of 1,370 officers and ratings. For additional protection to the magazines, mantlets were placed over them. The aircraft carrier was armed with four twin-mounted /50 calibre Mk 33 guns and four single saluting guns. The American 3-inch/50 calibre guns were chosen over 40 mm guns. Bonaventure had a distinct appearance compared to her sister ships as she had a tall lattice mast, raked funnel and large sponson where the 3-inch guns were situated.
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