The Supermarine S.6 and its S.6B development were high-speed racing seaplanes built for the Schneider Trophy, where their streamlined all-metal structure and Rolls-Royce racing powerplant advanced British flight technology. The family links the 1929 S.6 racers with the 1931 S.6B that won the trophy and set an absolute world speed record, a direct experimental lineage behind later Supermarine designs including the Spitfire.
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