The armoured flight deck had a maximum width of . A single hydraulic aircraft catapult was fitted on the forward part of the flight deck. The "Implacable"-class carriers were equipped with two lifts on the centreline, the forward of which measured and served only the upper hangar, and the aft lift () which served both hangars. The upper hangar was long and the lower hangar was long; both had a maximum width of . Both hangars had a height of only 14 feet which precluded storage of Lend-Lease Vought F4U Corsair fighters as well as many post-war aircraft and helicopters. Designed to stow 48 aircraft in their hangars, the use of a permanent deck park allowed the "Implacable" class to accommodate up to 81 aircraft. The additional crewmen, maintenance personnel and facilities needed to support these aircraft were housed in the lower hangar. The ships were provided with of aviation gasoline.