The export variant of the C-130H developed for the RAF received the designation C-130K: in British service, this received the designation Hercules C.Mk 1. Having entered service in 1966, this was still a relatively new appearance at the time of Operation Sheepskin. Nevertheless, five units were operational with the Hercules, including No. 242 Operational Conversion Unit, and Nos. 24, 30, 36 and 47 Squadrons. Initially, the aircraft wore the livery depicted here, comprising a standardised camouflage pattern in light stone (BS381C/361) and dark brown (BS381C/450) on upper surfaces and sides, and night (BS381C/642) on undersurfaces, with the cockpit roof in white. The full service title of the Royal Air Force Air Transport Command was applied on the upper side of the forward fuselage. (Artwork by Tom Cooper)