The Fokker M.7 was a German observation aircraft of World War I, used by the armed forces of both Germany and Austro-Hungary. Design and development Twenty aircraft, powered by Oberursel U.0 rotary engines, were built, some of which were used by Kaiserliche Marine (Imperial German Navy) shore stations. It was a single-bay sesquiplane (biplane) of conventional configuration, with slightly staggered wings using wing warping for roll control, tandem open cockpits and Fokker's distinctive comma-shaped rudder. The W.3 / W.4 was a floatplane version of the M.7. Operational history The aircraft was operated by the Austro-Hungarian forces under the designation Type B.I, following the German Empire's lettered prefixes from the Idflieg aircraft designation system. Variants M.7 : Two-seat reconnaissance aircraft version. W.3 : Possible misidentification of the W.4 W.4 : Two-seat reconnaissance floatplane version. = Imperial and Royal Aviation Troops Specifications (M.7) See also Notes References 1910s German military reconnaissance aircraft M.7 Sesquiplanes Single-engined tractor aircraft Rotary-engined aircraft Aircraft first flown in 1915