The Albatros W.4 was a military floatplane designed and produced by the German aircraft manufacturer Albatros Flugzeugwerke. The W.4 was a derivative of the Albatros D.I land-based fighter aircraft, furnished with a new wing and tail section of greater span than the D.I. It was powered by the same 120 kW (160 hp) Mercedes D.III engine as fitted to the D.
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