O.Thetford, P.Gray German Aircraft of the First World War (Putnam)

Otto C I (1915)
  A disused airframe on public display. Note kink in ailerons to give wash-out, as on L.V.G. machines. Engines, 150 h.p. Benz Bz III. Span, 14.5 m. (47 ft. 7 in.). Weights: Empty, 915 kg. (2,013 lb.). Loaded, 1,500 kg. (3,300 lb.). Armament, one Parabellum machine-gun in front cockpit.