Cannone da 76/45 S 1911

The Cannone da 76/45 S 1911 was a naval gun used by Italy during World War I and World War II. In addition to its naval role it was also employed in coastal artillery, railway gun and anti-aircraft roles.

Cannone da 76/45 S 1911
TypeNaval gun
Coastal artillery
Railway gun
Anti-aircraft gun
Place of originFrance
Service history
In service1911–1945?
Used by Kingdom of Italy
 Nazi Germany
Production history
DesignerSchneider et Cie
Designed1911
ManufacturerGio. Ansaldo & C.
No. built312
VariantsCannone da 76/45 CA
Specifications
Mass2,204 kg (4,859 lb)
Barrel length3.5 m (11 ft) L/46.9[1]
ShellFixed QF 76.2 x 699mm R[2]
Shell weight6 kg (13 lb 4 oz)
Caliber76.2 mm (3.00 in)
BreechSemi-automatic horizontal sliding-block
RecoilHydro-spring
CarriagePedestal mount
Elevation-5° to +80°
Traverse360°[1]
Rate of fire20-30 rpm
Muzzle velocity756 m/s (2,480 ft/s)
Maximum firing range6.4 km (21,000 ft) AA ceiling[1]

History

The 76/45 began life as a French design from the Schneider company called the Canon de 76 mm Modèle 1911. The Italians bought a production license and the gun was produced by the Gio Ansaldo company. In service there were a number of designations such as the Cannone da 76/45 S 1911, 76/45 S Mod 1911 RM (Regia Marina) and Cannone da 76/45 CA (contre-aereo). During World War I Ansaldo produced 312 guns and 287 mounts in response to a request for anti-aircraft guns.[3] These guns were emplaced on high angle pedestal mounts for static defense of high value targets and on armored trains of the Regia Marina.

During the 1930s the 242 surviving guns were assigned to coastal artillery and anti-aircraft units of the MVSN. These remained in use together with 66/47, 76/40, 77/28, 100/47, 102/35 and 102/45 due to insufficient numbers of the newer Cannone da 75/46 and Cannone da 90/53 guns. Guns captured by the Germans after the Italian defeat were designated 7.62 cm Flak 266/3 (i).[1]

The most common anti-aircraft configuration was a fixed battery of four guns located near major cities, factories or military bases. Target range was measured by optical coincidence rangefinders and height by optical height finders. These coordinates were transmitted to a single fire-control station, which calculated target speed, altitude and direction to determine deflection angles. These calculations were then transmitted to each gun crew for barrage fire. Batteries also had associated searchlights and acoustic location devices.

Notes
  1. Chamberlain, Peter (1975). Anti-aircraft guns. Gander, Terry. New York: Arco Pub. Co. p. 30. ISBN 0668038187. OCLC 2000222.
  2. "77-77 MM CALIBRE CARTRIDGES". www.quarryhs.co.uk. Retrieved 2017-09-19.
  3. "Le artiglierie italiane nella 2ª Guerra Mondiale". xoomer.virgilio.it. Retrieved 2017-09-19.

References
  • Friedman, Norman (2011). Naval Weapons of World War One. Barnsley, South Yorkshire, UK: Seaforth. ISBN 978-1-84832-100-7.
  • Gander, Terry; Chamberlain, Peter (1975). Anti-aircraft guns. New York, United States: Arco. ISBN 0668038187.
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