CANT Z.511
The CANT Z.511 was a four-engine long-range seaplane,originally designed for the Central and South Atlantic passenger routes, it was later adapted as a military transport and special bombing raider.
The design called for a large four-engine, twin-float seaplane began at the end of September 1937, when the technical department of CRDA who required a long-range seaplane for carrying mail, cargo and passengers to Latin America.
These plans were cancelled on the outbreak of World War II, but a version of the aircraft was adapted for long-range maritime patrol, armed with 10 single-mount 12.7 mm (0.500 in) machine guns in both side gun positions, in two upper turrets, and belly positions. Plans were made to install 20 mm (0.787 in) cannon in a front turret or in a glazed nose position, and more machine guns in a tail position.
It could carry up to 4,000 kg of bombs in an internal bay and on outer wing positions: up to four launch racks, for 454 mm (17.9 in) air-launched torpedoes for surface attack, or "Maiale" manned torpedoes or midget submarines for special operations.
The aircraft was powered by 4 × Piaggio P.XII RC.35 air-cooled radial piston engines of 1,500 hp each.
The Z.511 had its first test flights between October 1940 and March 1942. The prototype was then transported to Grado, Venezia for further evaluation.
After the division of the Italian forces, one aircraft was appropriated by the Fascist Aeronautica Nazionale Repubblicana. It had been damaged only weeks before by British fighters, which had strafed it on Lake Trasimeno where it was undergoing final trials.
It was transferred to the seaplane base at Vigna di Valle, where it was sabotaged by base personnel to prevent it falling into the hands of either the Allies or the Germans.
The other aircraft, still under construction at the CRDA factory, was retained by Axis forces and scrapped.
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