page_title: QF 12-pounder 18 cwt naval gun
section_title: Royal Navy service
hierarchical_section_title: QF 12-pounder 18 cwt naval gun / Service / Royal Navy service
caption_attribution_description: Photograph showing 2 QF 12 pounder 18 cwt guns mounted on the roof of X turret, HMS Dreadnought (1906).
context_page_description: The QF 12 pounder 18 cwt gun was a 3-inch high-velocity naval gun used to equip larger British warships such as battleships for defence against torpedo boats. 18 cwt referred to the weight of gun and breech, to differentiate the gun from others that also fired the "12 pound" shell.
context_section_description: Guns were mounted in:
  HMS Dreadnought commissioned 1906
  The last three King Edward VII-class battleships—HMS Britannia, HMS Africa, and HMS Hibernia, commissioned 1906–1907
  Lord Nelson-class battleships commissioned 1908
  Minotaur-class armoured cruisers commissioned 1908–1909
  The gun was superseded in the anti-torpedo boat role on new capital ships from 1909 onwards by the far more powerful BL 4-inch Mk VII gun.
caption: Two guns mounted on roof of "X" turret, HMS Dreadnought
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