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The 12-inch (305 mm)/40 caliber gun was developed after the Spanish–American War to use the new smokeless powder that had recently been adopted by the Navy. The Mark 3, gun Nos. 15–48 and 50–56, was constructed of tube, jacket, and eight hoops. It was found that the early guns suffered from excessive bore erosion, in an attempt to fix ...
12 inches (304.8 mm) Breech. Welin interrupted screw. Muzzle velocity. 2,700 ft/s (823 m/s) [4] Maximum firing range. 22,860 m (25,000 yd) [5] The BL 12 inch Gun Mark X[note 1] was a British 45-calibre naval gun which was mounted as primary armament on battleships and battlecruisers from 1906. It first appeared on HMS Dreadnought.
The gun originated from a desire for a longer 12 in (30 cm) gun than the existing RML 12-inch 35-ton gun.Experiments in 1874 with both 12 in (30 cm) and 12.5 in (32 cm) versions 3 ft (91 cm) longer than the existing 12 in (30 cm) gun showed the 12.5 in (32 cm) calibre was more suitable, and further experiments showed a projectile of 800 lb (360 kg) could be fired with a charge of 130 lb (59 kg ...
hand. The 12-inch coastal defense gun M1895 (305 mm) and its variants the M1888 and M1900 were large coastal artillery pieces installed to defend major American seaports between 1895 and 1945. For most of their history they were operated by the United States Army Coast Artillery Corps. Most were installed on disappearing carriages, with early ...
The 12-inch coast defense mortar was a weapon of 12-inch (305 mm) caliber emplaced during the 1890s and early 20th century to defend US harbors from seaborne attack. [note 1] In 1886, when the Endicott Board set forth its initial plan for upgrading the coast defenses of the United States, it relied primarily on mortars, not guns, to defend American harbors.
Muzzle velocity. 2,660 feet per second (811 m/s) Maximum firing range. 19,850 yards (18,150 m) at 45 degrees elevation. AA Range: 39,000 feet (11,890 m) at 80 degrees elevation [4] Filling weight. 9 pounds (4.08 kg) The QF 4 inch Mk XVI gun[note 1] was the standard British Commonwealth naval anti-aircraft and dual-purpose gun of World War II.
Following the success of their BL 9.2-inch howitzer, Vickers designed an almost identical version scaled up to a calibre of 12 inches, the Mk II entering service on the Western Front in August 1916. [2] Eight complete equipments are reported as arriving in August 1916 and being in action in France shortly afterwards.
The QF 12-pounder 12-cwt gun (Quick-Firing) (abbreviated as Q.F. 12-pdr. [12-cwt.]) was a common, versatile 3-inch (76.2 mm) calibre naval gun introduced in 1894 and used until the middle of the 20th century. [4] It was produced by Armstrong Whitworth, Elswick and used on Royal Navy warships, exported to allied countries, and used for land ...
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