Supermarine Aircraft Spitfire Aircraft company and produce all-Australian homebuild aircraft kits. In the event, the constant-speed, four-blade propeller would be obtained from a specialist firm in New Zealand. Supermarine Aircraft is not related to the original British Supermarine company, although the owners of the Supermarine marque have given their permission for the name to be used. The first production model was named the Spitfire Mk25 and was a 75% scale replica of the original Supermarine Spitfire design. The stressed skin structure consists of 2024 aluminium alloy skins, formers and longerons with some fibre-glass mouldings for parts such as fairings and air scoops. The
Supermarine Spitfire (early Merlin-powered variants) versions of the Mk I which were to be modified to meet the requirements of Estonia, Greece, Portugal, and Turkey respectively. Estonia's order was cancelled when the Soviet Union annexed the country. The Greek and Portuguese orders were refused by the Foreign Office. The 59 aircraft for Turkey were approved, but after delivering two aircraft, the Foreign Office put a halt to that too in May 1940. The 208th production Spitfire I was sold to France and in June 1939 was delivered for evaluation. In 1941, the British government agreed to supply Portugal with 18 Spitfire Mk 1As. These were