804 NAS, FAA - One of the original batch of Martlet Mk.I fighters delivered to the Fleet Air Arm.
Royal Naval Air Station Hatston. Orkney Islands in late 1940.
Powered by the nine-cylinder, single-row R-1820-G205A radial engine, of 1200 hp and with a single-stage two-speed supercharger.
Armament: four 0.50 in (12.7 mm) guns.