The FF.64 was a two-seat biplane powered by a Mercedes D.III inline piston engine. The aircraft had folding wings as they were intended for operation from Navy ships on patrol/reconnaissance duties. Only three aircraft were built.
Borzutzki, Siegfried (1993). Flugzeugbau Friedrichshafen GmbH: Diplom-Ingenieur Theodor Kober [Friedrichshafen Aircraft Company: Diploma-Engineer Theodore Kober] (in German). Berlin: Burbach. ISBN3-927513-60-1.
Herris, Jack (2016). Friedrichshafen Aircraft of WWI: A Centennial Perspective on Great War Airplanes. Great War Aviation Centennial Series. Vol. 21. n.p.: Aeronaut Books. ISBN978-1-935881-35-3.