Furious, a Courageous-class light battlecruiser, had 76 mm armor protection and carried two 457 mm single-gun mounts. During World War I, it was decided to convert the ship into an airplane carrier: A hangar and flight deck were mounted instead of the superstructures. During World War II, the aircraft carrier was engaged in the hunt for Gneisenau, anti-submarine patrols, and the Norwegian campaign. In 1943, Furious took part in the hunt for Tirpitz that was hiding in the Norwegian fjords.