J.Herris Friedrichshafen Aircraft of WWI (A Centennial Perspective on Great War Airplanes 21)

Friedrichshafen FF6

   The FF5 design was not built, making the next Friedrichshafen aircraft the FF6, the first Friedrichshafen land plane. The FF6 was a two-seat tractor biplane with a 2 1/2 bay wing cellule powered by an in-line, water-cooled engine, perhaps a 100 hp Argus. The FF6 was a conventional design with ailerons for roll control and one photo shows it with serial B203 on the rudder, indicating it may have been used for reconnaissance or training early in the war. As far as is known, only a single aircraft was built and no specifications have survived.

Friedrichshafen FF6 Specifications
Engine: 100 hp Argus?