page_title: QF 12-pounder 12 cwt naval gun
section_title: Coast defence gun
hierarchical_section_title: QF 12-pounder 12 cwt naval gun / Gun mounting data / Coast defence gun
caption_attribution_description: English: Photograph of QF 12 pounder 12 cwt naval gun, of an early vintage, probably Mk I. At Newhaven Fort, UK.
context_page_description: The QF 12-pounder 12-cwt gun was a common, versatile 3-inch 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, exported to allied countries, and used for land service. In British service "12-pounder" was the rounded value of the projectile weight, and "12 cwt" was the weight of the barrel and breech, to differentiate it from other "12-pounder" guns.
  As the Type 41 3-inch /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.
context_section_description: Many guns were mounted on "pedestals" secured to the ground to defend harbours around the UK, and at many ports around the Empire, against possible attack by small fast vessels such as torpedo boats, until the 1950s. There were 103 of these guns (of a total 383 of all types) employed in coast defence around the UK as at April 1918. Many of these were still in service in World War II although they had by then been superseded by more modern types such as twin QF 6 pounder 10 cwt mounts.
  Guns were traversed (moved from side to side) manually by the gunlayer as he stood on the left side with his arm hooked over a shoulder piece as he aimed, while he operated the elevating handwheel with his left hand and grasped the pistol grip with trigger in his right hand.
caption: Typical coast defence mounting, at Newhaven Fort, UK
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