A major advance in the development of Glen Curtis' seaplanes was his invention of the stepped pontoon that allowed his aircraft to break free of the waters surface, leading to the first successful liftoff from water on January of 1911. However there was nothing new about the idea of a stepped hull, the earliest documented evidence seems to be the 1970s ideas and experimentations of a Reverend C.M. Ramus of Sussex England who produced the sketches below. His ideas were dismissed as impossible and ludicrous at the time but as the development of compact and lightweight gasoline engines changed speedboat design, the advantages
The concepts were all out there, experiments and experience were proving them practical but it took the creative mind of Glen Curtiss to adapt them to aircraft.
|Images from D.W. Fostle, Speedboat, Mystic Seaport Museum 1988|
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