two seat (side by side), anti-submarine and anti-surface warfare helicopter. derived from the saunders-roe p531, after disappointing experience with the skeeter 5. powered by a (derated) rolls-royce (blackburn) nimbus 101 engine. a four point, castored wheel fixed undercarriage and its small size allowed operation from small ships. used by the royal navy (96), with export versions for australia, brazil, netherlands and new zealand navies. could carry two torpedos or air to surface missles.
production wasps used the rolls-royce nimbus 503 engine.
built at fairey (then westland) factory at hayes, middlesex. transported to white waltham for first flight.