BL 9.2 inch Mk XI naval gun

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
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
Calibre	9.2 inches (233.7 mm)
Muzzle velocity	2,875 feet per second (876 m/s)

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

File:HMS Agamemnon (1906) 9.2-inch gun firing on Sedd el Bahr 4 March 1915.jpg

Agamemnon fires her 9.2-inch secondary guns at Ottoman Turkish forts at Sedd el Bahr on 4 March 1915

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 :

• Minotaur class armoured cruisers laid down 1905 & completed 1908 - 1909 : 2 twin mounts.
• Lord Nelson class battleships laid down 1905 & completed 1908 : 4 twin mounts and 2 single mounts.

See also

• 12px Media related to BL 9.2 inch Mk XI naval gun at Wikimedia Commons
• List of naval guns

External links

• Tony DiGiulian, British 9.2"/50 (23.4 cm) Mark XI

Template:GreatWarBritishNavalWeapons