O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
Zeppelin C I and C II (Ja)
These two two-seaters were designed by Paul Jaray and constructed at the Zeppelin airship factory at Friedrichshafen during the autumn of 1917. Only two C Is were built. These were wooden machines with fabric covering. The C II was virtually the same aircraft, except that the balances on the tail surfaces were dispensed with and now constructed with a metal frame. Six were completed during the winter of 1917-18. Twenty C IIs had been completed by the Armistice, and their destruction was ordered by the Allied Control Commission, but their sale to Switzerland was tacitly permitted. They were flown by the Swiss Air Force until 1928 and were well liked by their crews.
Engine, 240 h.p. Maybach Mb IV. Span, 120 m. (39 ft. 4 1/2 in.). Length, 7,925 m. (26 ft. 0 in.). Height, 3.585 m. (11 ft. 9 in.). Weights: Empty, 987.5 kg. (2,173 lb.). Loaded, 1,455 kg. (3,201 lb.). Speed ca. 200 km.hr. (125 m.p.h.). Climb to 5.000 m. (16,400 ft.) in 33 min.