BL 9.2-inch Mk XI naval gun
| BL 9.2-inch Mk XI gun | |
|---|---|
Agamemnon fires her 9.2-inch secondary guns at Ottoman Turkish forts at Sedd el Bahr on 4 March 1915 | |
| Type | Naval gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1908 – 1920 |
| Used by | United Kingdom |
| Wars | World War I |
| Production history | |
| Designer | Vickers |
| Designed | 1902 |
| Specifications | |
| Mass | 28 tons barrel & breech |
| Barrel length | 38 ft 4 in (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 ft/s (876 m/s) |
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The BL 9.2-inch Mark XI gun 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.