The Caproni Ca.3 was an Italian heavy bomber of World War I and the postwar era. It was the definitive version of the series of aircraft that began with the Caproni Ca.1 in 1914.The Ca.3 was a three-engined
biplane of wooden construction, with a fabric-covered frame. The crew of four were placed in an open central nacelle (front gunner, two pilots and rear gunner-mechanic). The rear gunner manned upper
machine guns, standing upon the central engine in a protective "cage" in front of a propeller. The fixed
conventional undercarriage had double mainwheels under each engine and a tailskid under the extreme tail of each boom. A substantial double nosewheel prevented damaging and dangerous noseovers.
Armament consisted of two to four Revelli 6.5 mm or 7.7 mm machine guns, one in a front ring mount and one, two or sometimes even three in an upper ring mount. Bombs were suspended under the hull.