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.

J.Herris German Aircraft of Minor Manufacturers in WW1. Vol II (A Centennial Perspective on Great War Airplanes 50)

Schutte-Lanz G.I

  Schutte-Lanz is mainly known for building airships, but also built a series of airplane prototypes, none of which reached production. One bomber, the Schutte-Lanz G.I, was built and several others were designed but not built, although the Schutte-Lanz G.V was built by LVG as the LVG G.III.
  The Schutte-Lanz G.I was designed and built to the original Kampfflugzeug specification of 1914; it was originally assigned to the "K" category but became the G.I when the G-category replaced it. The fuselage had a five-sided cross section covered with plywood. Two 160 hp Mercedes D.III engines were fitted in a pusher configuration, common to most German two-engine aircraft of the time. As shown in the photo, the propellers were fitted to long extension shafts to clear the wing.
  The gunner had a single flexible machine gun in the front cockpit. The configuration did not look balanced; a small rudder without fixed fin was fitted but the horizontal stabilizers were nearly half the length of the fuselage. The G.I was too slow to intercept hostile aircraft and the propeller extension shafts and their supports were heavy and created excessive drag; only one aircraft was completed.

Schutte-Lanz G.I Specifications
Engines: 2 x 160 hp Mercedes D.III
Wing: Span 22.0 m
Area 100.0 m2
General: Length 12.0 m
Height 4.2 m
Empty Weight 1,850 kg
Loaded Weight 3,100 kg
Maximum Speed: 125 km/h
Duration: 6 hours
Armament: 1 flexible MG