The Caproni Ca.313 was delayed because of difficulties in getting the Isotta-Fraschini engines ready.
The engines were inline and thus provided for an improved aerodynamics.
The pilot and co-pilot (or navigator) sat in the transparent nose with the bombardier. There were two sets of controls.
The gunner was positioned behind the pilots.
The Ca.313 had two steel tube frames that were bolted together. These were covered by fabric.
The hydraulically operated landing gear on the Ca.313 retracted backwards into the engine nacelles. They could be hand cranked in an emergency.
The tail had a wood frame with a fabric covering.
The Ca.313 had a low cantilever wing that was constructed from wood. The portions between the spars were made watertight and could help in floating in water if it had to made an emergency water landing.