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QF 12-pounder 12 cwt naval gun
The QF 12 pounder 12 cwt gun was a common, versatile calibre naval gun introduced in 1894 and used until the middle of the 20th century. It was produced by Armstrong Whitworth, Elswick and used on Royal Navy warships, and exported to allied countries. In British service, "12 pounder" was a rounded reference to the projectile weight and "12 cwt" referred to the weight of the barrel and breech : 12 hundredweight = 12 x 112 pounds = 1344 pounds, to differentiate it from other "12 pounder" guns.
As the Type 41 3-inch (76.2 mm)/40 it was used on most early battleships and cruisers of the Imperial Japanese Navy, though it was commonly referred to by its UK designation as a “12-pounder” gun.
==United Kingdom service==
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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