Light Fleet Carrier
renamed HMCS Bonaventure (Canada) 1957


HMS Powerful was built by Harland & Wolff, laid down 27 November 1943 and launched 27 February 1945. Decommissioned July 1970, stricken. Broken up in Taiwan.

Poweful was in mothballs in Belfast after the end of WWII, and was sold to Canada on 23 April 1952, then completed to a modified design with 8 degree angled flight deck. On 17 January, 1957, HMS Powerful was commissioned into
the Royal Canadian Navy as HMCS Bonaventure. ASW carrier from 1961.

Powerful was decommissioned 3 July 1970, stricken and broken up in Taiwan.

Battle Honours
None in World War II

None in World War II

Squadrons and Aircraft
None in World War II

Associations and Reunions
No information

Carrier name HMS Powerful. sold as HMCS Bonaventure 1952 (Canada)
Class Majestic Class
Type Light Fleet Aircraft Carrier
Ships in Class Majestic, Terrible, Magnificent, Powerful, Leviathan, Hercules
Launched Laid down November 1943. Launched February 1945. Sold to Canada. Completed to a modified design. Commissioned 17 January 1957. ASW carrier from 1961. 
Tonnage Displacement: 14,224 tons standard ; 18,085 tons full load
Engines Propulsion: Steam Turbines (4 Admiralty 3-drum boilers, 2 shafts, Parsons geared turbines), 40,000 shp.
Speed in Knots Speed: 25 knots
Armament Guns: 24 x 2 pdr AA ; 19 x 40 mm 
Crew Complement Compliment: 1100 (including air group)
Range  Range: 12,000 nmiles at 14 knots
Length (ft/inches) Dimensions: 630 pp, 650 wl, 695 oa x 80 x 23.5 feet
Beam (ft/inches)  
Draught (ft/inches)  
Flight Deck length (ft/inches) short, straight flight deck (only 207m/680') 
Flight Deck width (ft/inches)  
Number of aircraft carried 37
Fate of carrier Decommissioned July 1970, stricken. Broken up.
Notes Originally part of the Colossus class, these last six ships were completed to a slightly modified design more suited to operating heavier aircraft. None commissioned into the Royal Navy, all but one being sold.

Canadian Aircraft Carriers Full history of HMS Powerful in RCN as HMCS Bonaventure postwar.
Warship1 website on Canadian Aircraft Carriers: Bonaventure 'Modified Majestic type' Magnificent 'Majestic type' Warrior 'Collossus type  
Sturtivant, R & Ballance, T  (1994). 'The Squadrons of the Fleet Air Arm' Published by Air Britain (Historians) Ltd, 1994 ISBN: 0 85130 223 8

The World’s Warships 1941 by Francis E. McMurtrie (1944). Janes London 1941 1st ed. 

Jane's Fighting Ships of World War II by Francis E. McMurtrie (Editor)(1984). 320 pages. Crescent Books; ISBN: 0517679639 

World Aircraft Carrier Lists and Photo Gallery - from 1913 to 2000. Naval History Information Center, Haze Gray & Underway
       Last Modified: 23-2-2001


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