BL 9.2 inch Mk XI naval gun

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BL 9.2 inch gun Mk XI
File:HMS Defence Stern 9.2 inch guns trained to port.jpg
Aft guns of HMS Defence trained to port
Type Naval gun
Place of origin  United Kingdom
Service history
In service 1908 - 1920[1]
Used by  United Kingdom
Wars World War I
Specifications
Weight 28 tons barrel & breech
Barrel length 460 inches (11.68 m) bore (50 cal)

Shell 380 pounds (172.4 kg) Lyddite, Armour-piercing, Shrapnel[2]
Calibre 9.2 inches (233.7 mm)
Muzzle velocity 2,875 feet per second (876 m/s)[3]

The BL 9.2 inch gun Mark XI was a British 50 calibre high-velocity naval gun which was mounted as primary armament on armoured cruisers and secondary armament on pre-dreadnought battleships.

History

The gun with its increased length of 50 calibres was an attempt to extract a higher velocity, and hence more range and armour-piercing capability, from the 9.2 inch gun. Like other British 50-calibre guns of the period it was relatively unsuccessful, and was the last model of 9.2 inch gun Britain built.

Guns were mounted in the following ships :

See also

Surviving examples

Notes

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References

External links


Template:GreatWarBritishNavalWeapons
  1. 1908 - 1920 : Dates of commissioning and scrapping of the ships. The guns were not used again after removal.
  2. 380 lb shells : Treatise on Ammunition, 1915
  3. 2875 ft/second : As quoted in "Range Tables for His Majesty's Fleet, 1910. February, 1911"; with 130 ½ lb cordite MD propellant : Treatise on Ammunition, 1915