120 mm/45 O.T.O. Mod. 1926 (120 mm)
The 120 mm/45 O.T.O. Mod. 1926 is a naval gun that was developed by the Italian company Odero Terni Orlando (OTO) during the interwar period.
Vehicles equipped with this weapon
The 120 mm/45 O.T.O. Mod. 1926 features a rifled barrel that is 45 calibres long. It fires a 23.5-kilogram projectile at a muzzle velocity of 850 metres per second. The gun has a maximum range of 20 km and is equipped with a variety of different types of ammunition, including high-explosive, armour-piercing, and incendiary rounds.
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Comparison with analogues
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Usage in battles
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Pros and cons
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The 120-millimetre/45-calibre O.T.O. Mod. 1926 is a licensed version of the French 120 mm/45 Canet-Schneider-Armstrong mod.1918 naval gun. A French design, the guns were originally used to arm auxiliary craft during World War I. Licensed production began with Vickers-Terni in 1924 leading to the 120 mm/45 Vickers-Terni Mod. 1924 used on the Sauro-class destroyers. These new guns offered more firepower compared to the prior WWI-era destroyers built with 102 mm guns and 120 mm became the standard caliber for future destroyer designs. These guns used a 17-pound smokeless powder charge to launch a 51-pound projectile at 2,800 feet per second and a range of 9.6 miles. Its maximum elevation was 33 degrees and it used a 16.6" twin mount to increase dispersion. In 1926, Terni Steelworks formally merged with Cantiere navale fratielli Orlando and Canitieri navali Odero to form O.T.O. The designation was thus changed to the 120 mm/45 O.T.O. model 1926 which was used to arm the later Turbine-class destroyers and rearm their Sella-class destroyers.
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