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

Schutte-Lanz G I
  This experimental twin-engined machine was to the original K (Kampfflugzeug) specification for large fighting aircraft, but the designation was later changed to "G" for twin-engined machines. This aircraft had a slab sheet-covered fuselage of quintagonal section, the top being flat, the sides tapered in "tumblehome" fashion and the two bottom surfaces met at an angle at the centre-line. The engines were mounted well forward on the lower wings, with the pusher airscrews driven through extended shafts to clear the trailing edge. The triangular tailplane extended almost half the length of the fuselage, and by comparison the comma rudder seemed ridiculously small. Engines, 2 X 160 h.p. Mercedes D III. Span, 22 m. (72 ft. 2 1/4 in.). Length, 12 m. (39 ft. 4 1/2 in.). Height, 4.2 m. (13 ft. 9 3/8 in.). Area, 100 sq.m. (1,080 sq.ft.). Weights: Empty, 1,850 kg. (4,070 lb.). Loaded, 3,100 kg. (6,820 lb.). Speed, 125 km.hr. (78.125 m.p.h.). Duration, 6 hr. Armament, one Parabellum machine-gun in nose.