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

Sablatnig C III
   Although no data on this interesting machine is available, it appears to have been based on the same ply-covered fuselage and tail surfaces as the C II. The low wing was of parallel chord and fitted with overhung, balanced ailerons. It was cable braced to the top of the fuselage, and underneath the cables were anchored to an additional pylon incorporated in the undercarriage chassis. A large lifting surface, as in the Fokker D VII, faired in the axle and spreaders. Engine, 245 h.p. Maybach Mb IV (probably).

J.Herris Nachtflugzeug! German N-types of WWI (A Centennial Perspective on Great War Airplanes 3)

Sablatnig N.I & Related Types
  
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   The final known Sablatnig two-seater was the handsome, innovative C.III monoplane. The C.III tail and semi-monocoque plywood fuselage were derived from the C.II. Apparently the same 240-260 hp Maybach Mb.IVa engine fitted to the C.II was used, but this time a frontal radiator was employed for reduced drag. The wire-braced monoplane wing was of constant chord, and both ailerons and elevators were horn-balanced. Flying surfaces were covered in lozenge camouflage fabric. The under¬carriage spreader bar was faired into a lifting surface in the manner of later Fokker designs. The C.III was well-streamlined and looked as advanced as any contemporary. Unfortunately, further details and performance of this elegant aircraft are not available, and it remained a prototype.
   The Sablatnig C.II derived from the N.I was a mediocre design deserving of its obscurity. However, the elegant C.III was a real design break-through, although the wire wing bracing appears vulnerable to combat damage and might have been replaced with stronger struts had development continued. The C.III appeared to have good development potential but arrived too late.