The Heinkel HE 1 was a two-seat, low-wing monoplane floatplane, designed in 1921 by German designer Ernst Heinkel at Caspar-Werke. The aircraft was initially produced under licence in Sweden for the Marinen (Swedish Navy) in 1921. The HE 1 was powered by a 179 kW (240 hp) Maybach Mb.IVa engine; one test aircraft was powered by a Siddeley Puma engine.
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