This is an injection-plastic ship model kit.
From the Revell website:
Ark Royal was one of the first aircraft carriers to be built with flight deck and hangar bays incorporated in the hull structure of the ship. She was the lynchpin of several crucial actions in the early days of WWII, plus, she was a spectacularly lucky ship. Obsolete Swordfish torpedo bombers from Ark Royal enabled the Royal Navy to sink the German Battleship Bismarck. In 1941, Ark Royal was struck by a torpedo off Gibraltar and sank. Fortunately, all but one of her over 1,000 crewmen made it to safety. Kit features Ark Royal and a Tribal Class Destroyer with stands.