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100-ton gun
The 100-ton gun (also known as the Armstrong 100-ton gun) was a 17.72 inch (450 mm) rifled muzzle-loading (RML) gun made by Elswick Ordnance Company, the armaments division of the British manufacturing company Armstrong Whitworth, owned by William Armstrong. The 12 guns Armstrong made armed two Italian battleships, and to counter these, British fortifications at Malta and Gibraltar.
==Origins==
Around 1870 the largest gun made by UK firms was the 320 mm RML (rifled, muzzle-loading) gun, with a mass of 38 long tons (38.6 t), firing an 818-pound (371 kg) projectile capable of piercing 16.3 inches (414 mm) of mild steel at 2,000 yards (1,800 m). This weapon was adequate for the needs of the time, but the progress of gun technology was very rapid. French industries soon made a 420 mm, 76 tonne gun. This led the Royal Navy to ask for an 80 long ton (81 t) gun.
Armstrong, the main British artillery producer, began a project for creation of an even larger weapon, an 18 inch (457 mm) gun, also called the '100 ton'. Armstrong offered it to the Royal Navy, which rejected the gun, deeming it too heavy and costly.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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