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- Q7199656 subject Q8669353.
- Q7199656 abstract "A pivot gun was a type of cannon mounted on a fixed central emplacement which permitted it to be moved through a wide horizontal arc. They were a common weapon aboard ships and in land fortifications for several centuries but became obsolete after the invention of gun turrets. By mounting a cannon on a pivot, a much wider arc of fire could be obtained than was possible with conventional carriage-mounted cannons. Unlike the latter, however, pivot guns were fixed in one place and could not easily be moved outside of their horizontal arc; they could thus only really be used in fixed positions such as in a fort or on a battleship.There was no standard size of pivot gun, though they tended to be fairly substantial weapons. Like other cannons, they were muzzleloaders and could fire either shells or grapeshot (or other types of shot). Their calibers ranged from a few inches to the giant 11-inch Dahlgren guns used by the United States Navy in the mid-19th century. Pivot guns had a major disadvantage in warfare: they were very difficult to protect in battle and were necessarily very exposed, as they lay close to the surface of a ship's deck and required an open field of view. In the late 19th century they were replaced by "disappearing guns" and ultimately by turrets, which enabled a broad arc of fire while providing the gunners with all-round protection from incoming fire.Pivot guns should not be confused with swivel guns, a much smaller type of ordnance.".
- Q7199656 thumbnail Pivot_gun_usnavy.jpg?width=300.
- Q7199656 wikiPageWikiLink Q1075009.
- Q7199656 wikiPageWikiLink Q11220.
- Q7199656 wikiPageWikiLink Q1256431.
- Q7199656 wikiPageWikiLink Q1461850.
- Q7199656 wikiPageWikiLink Q2518040.
- Q7199656 wikiPageWikiLink Q318028.
- Q7199656 wikiPageWikiLink Q558591.
- Q7199656 wikiPageWikiLink Q708255.
- Q7199656 wikiPageWikiLink Q81103.
- Q7199656 wikiPageWikiLink Q8669353.
- Q7199656 type Product.
- Q7199656 type Device.
- Q7199656 type Weapon.
- Q7199656 type Thing.
- Q7199656 type Q728.
- Q7199656 comment "A pivot gun was a type of cannon mounted on a fixed central emplacement which permitted it to be moved through a wide horizontal arc. They were a common weapon aboard ships and in land fortifications for several centuries but became obsolete after the invention of gun turrets. By mounting a cannon on a pivot, a much wider arc of fire could be obtained than was possible with conventional carriage-mounted cannons.".
- Q7199656 label "Pivot gun".
- Q7199656 depiction Pivot_gun_usnavy.jpg.