12-inch/50-caliber gun (Argentina)

yes yes yes ARA Moreno 305mm gun.jpg 300 a main gun of the battleship ARA Moreno during its construction, sometime between 1910 and 1915. 12"/50 caliber Bethlehem gun United States Rivadavia battleships US Navy (coastal batteries)Brazil (coastal batteries) World War I, World War II Naval gun 1910 Bethlehem Steel Corporation 1915–19561956 is the year the Argentinian battleships were decommissioned. 12 in mm 4 50 ft 6 in m on 4 bore (50 cal) 2.0–3.0 rounds per minute 24000 yd m on 38 in cm 66 tons The 12"/50 caliber Bethlehem gun was a US naval gun designed in 1910 as the main armament for the Argentine Navy's dreadnought battleships of the Rivadavia battleship 4. Design The gun was designed in 1910, and it was probably based on the US 12"/50 (30.5 cm) Mark 7 naval gun with a breech weight added. The guns were manufactured at the Bethlehem Steel Corporation.DiGiulian Tony Argentina - 12"/50 (30.5 cm) Bethlehem http://www.navweaps.com/Weapons/WNARG_12-50_Bethlehem.htm Navweaps.com 22 February 2010 https://web.archive.org/web/20100114192258/http://www.navweaps.com/Weapons/WNARG_12-50_Bethlehem.htm 14 January 2010 live Twelve 305 mm guns were mounted in six twin (2-gun) turrets, two in front, two behind, and one on each side, on each of the ships in the class. Measurements and Capabilities The gun weighed 66 tons including the breech and was capable of an average rate of fire of 2–3 rounds a minute. It could throw an 870 lb. (394.6 kg) Mark 15 armor-piercing shell 24,000 yards (21,950 meters) at an elevation of 14.7°, while the "barrel life" of the guns was 200 shots. The previous 12" gun, manufactured for the U.S. Navy, was the Mark 7 version, a very similar gun which had been designed and installed in the 1912 era Wyoming battleship 2s. Service thumb|left|12"/50 Bethlehem steel gun on a coastal mount for Chile thumb|right|Main deck and guns of Moreno This gun was installed in the Argentine Navy Rivadavia-class battleships Rivadavia and Moreno. Six more guns were later contracted by Chile for coastal defence, but they were requisitioned by the US government due to the WWI. Half was converted for railway sliding carriages and half was saved as spares. In 1940 all six gun tubes were bought by Brazil from US military surplus but never used. See also BL 12 inch Mk XI – XII naval gun British equivalent Obukhovskii 12"/52 Pattern 1907 gun Russian equivalent 30.5 cm SK L/50 gun German equivalent List of naval guns References Citations Sources September 2015 External links History and specifications, at Naval Weapons of the World website (NavWeaps.com) (retrieved 2010-02-22) "Haze Gray & Underway" - World Battleship Lists - Argentina (retrieved 2010-02-22) es "Historia y Arqueología Marítima" (HistArMar) - Battleships ARA Moreno & Rivadavia - History & Pictures (retrieved 2010-02-22) June 2017 Category:Naval guns of Argentina Category:Naval guns of the United States Category:World War II naval weapons Category:305 mm artillery