HMS Ark Royal (91) was a British aircraft carrier from World War II. It was launch in April 1937, and entered into service in the Royal Navy in December 1938. The full displacement was 28,200 tons, The length of the ship at launching was 240 m, width was approximately 29 m and with a draft of 9.6 meters. It maximum speed was up to 30 knots. The aircraft carrier was capable of accommodating 72 aircraft, but it only operated just over 50 aircraft. Its armament consisted of a number of weapons including 32 x 40mm cannons and 16 x 114mm cannons.