Editing HMCS Bonaventure (section)

===Early service===
''Bonaventure'' was named for [[Bonaventure Island]], a bird sanctuary in the [[Gulf of St. Lawrence]] and was the first aircraft carrier owned outright by Canada,{{sfn|Kealy|Russell|1967|p=99}} initially tasked with [[Convoy#Naval convoys|trade protection]].{{sfn|Milner|2010|p=210}} In March 1957, the aircraft carrier began [[sea trial|trials]] in the [[English Channel]] with her aircraft. ''Bonaventure'' sailed for Canada on 19 June and arrived at her home port, [[Halifax, Nova Scotia]], on 26 June, carrying the experimental [[hydrofoil]] {{ship||Bras d'Or|R-103|2}} to Canada on her flight deck.{{sfn|Hobbs|2013|p=337}}{{sfn|Kealy|Russell|1967|p=102}} In October, the aircraft carrier began further trials with her air group composed of VF 870 (Banshee), VS 881 (Tracker) and one HO4S helicopter in the [[Caribbean Sea]] that lasted until early 1958. This included cross-deck operations with the Royal Navy aircraft carrier {{HMS|Bulwark|R08|6}}.{{sfn|Hobbs|2013|p=337}} On 2 October, a Banshee fighter flying from ''Bonaventure'' to the naval air base [[CFB Shearwater|HMCS ''Shearwater'']] was lost at sea. The resulting search did not find the plane or the pilot.{{sfn|Kealy|Russell|1967|p=102}} Captain [[William Landymore]] became the ship's senior officer on 15 January 1958.{{sfn|Macpherson|Barrie|2002|p=237}} On 25 February 1958, a Banshee crashed into the sea after takeoff and the pilot was killed. On 4 March, a Banshee suffered another fatal crash, as the aircraft made a normal deck landing, an apparent brake failure caused the fighter to flip over the port side of the aircraft carrier, killing the pilot.{{sfn|Kealy|Russell|1967|p=104}} Later in the year, ''Bonaventure'' participated in the [[Military exercise|naval exercises]] New Broom IX and Sharp Squall IV.{{sfn|Hobbs|2013|p=337}} During Sharp Squall IV a Banshee was lost off the bow of the ship during takeoff. This time, the pilot was recovered by the [[destroyer]] {{HMCS|Athabaskan|R79|6}}.{{sfn|Kealy|Russell|1967|p=109}} In November 1958, while operating off the [[Grand Banks of Newfoundland]], ''Bonaventure'' and her escorts made contact with a [[Soviet Navy]] [[submarine]] while patrolling around a group of Russian [[fishing trawler]]s.{{sfn|Milner|2010|p=223}} The aircraft carrier ended the year with a visit to the United Kingdom before going into refit at [[Saint John, New Brunswick]].{{sfn|Hobbs|2013|p=337}} On 12 September 1959, Captain [[John O'Brien (admiral)|John O'Brien]] took command of the ship.{{sfn|Macpherson|Barrie|2002|p=237}}
[[File:HMCS Bonaventure MIKAN 4821374.jpg|thumb|left|HMCS ''Bonaventure'' from the stern, photo taken in October 1957]]

In 1960, [[NATO]] reorganized their defence of the [[North Atlantic]] and the Canadian contribution to the new plan centred around an ASW [[Hunter-killer Group|hunter-killer group]] led by ''Bonaventure''.{{sfn|Tracy|2012|p=133}} The aircraft carrier rejoined the fleet in November 1960, embarking VF 870 (Banshee), VS 880 (Tracker) and HS 50 (HO4S) squadrons. Beginning in February 1961, ''Bonaventure'' took part in the naval exercise Toput Droit, followed by a period spent training with the [[United States Atlantic Fleet]] in the summer and further naval exercises in October.{{sfn|Hobbs|2013|p=337}} Captain F.C. Frewer took over command of the ship on 30 August 1961.{{sfn|Macpherson|Barrie|2002|p=237}} In April 1962, ''Bonaventure'' had her 10,000th deck landing by an aircraft (a Tracker).{{sfn|Hobbs|2013|p=337}} On 30 September 1962, Canada withdrew the Banshee fleet and ''Bonaventure''{{'}}s mission changed to a purely anti-submarine warfare one.{{sfn|Gardiner|Chumbley|Budzbon|1995|p=43}}{{sfn|Milner|2010|pp=229, 233}} The air group was then composed solely of VS 880 and HS 50 squadrons.{{sfn|Hobbs|2013|p=337}}

On 13 October 1962, at the onset of the [[Cuban Missile Crisis]], ''Bonaventure'' and the [[1st Canadian Escort Squadron]] were sailing through United Kingdom territorial waters. As the crisis deepened, ''Bonaventure'' and her escorts were recalled to Canada.{{sfn|Milner|2010|pp=233–34}} The ship returned to her homeport following the crisis and, in January 1963, began a refit at Saint John. During the refit, the ship was modified for the operation of the Sea King helicopters. The aircraft carrier rejoined the fleet in May, but suffered a boiler explosion while in port at Halifax. Repairs took six weeks to complete.{{sfn|Hobbs|2013|p=337}} On 7 August, Captain [[Robert Timbrell]] took command of the vessel.{{sfn|Macpherson|Barrie|2002|p=237}} That year ''Bonaventure'' took part in the Sharp Squall naval exercise and in September, participated in testing ASW defences in the [[Greenland]]-Iceland gap. That was followed by cross-deck operations with the aircraft carrier {{HNLMS|Karel Doorman|R81|6}}.{{sfn|Hobbs|2013|p=337}}