High Quality Content by WIKIPEDIA articles! HMCS Bonaventure (CVL-22) was a Majestic class aircraft carrier. She served in the Royal Canadian Navy and Canadian Forces Maritime Command from 1957 to 1970 and was the third and the last aircraft carrier to serve Canada. The ship was laid down for the British Royal Navy as HMS Powerful in November 1943. At the end of World War II, work on the ship was suspended in 1946. At the time of purchase, it was decided to incorporate new aircraft carrier technologies into the design. Bonaventure never saw action during her career having only peripheral, non-combat roles. However, she was involved in major NATO fleet-at-sea patrol during the Cuban Missile Crisis.