BL 6-inch Mk XXIII naval gun
The 50 calibre BL 6 inch gun Mark XXIII was the main battery gun used on the Royal Navy and British Commonwealth's conventional (non-anti-aircraft) light cruisers built from 1930 through the Second World War, and passed into service with several other navies when ships were disposed of after the end of the War.
| Ordnance BL 6 inch gun Mk XXIII | |
|---|---|
Forward triple-gun turrets of HMS Belfast, March 2005 | |
| Type | Naval gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1931 - 1985 |
| Used by | Royal Navy Royal Australian Navy Royal New Zealand Navy Royal Canadian Navy Indian Navy Peruvian Navy Republic of China Navy People's Liberation Army Navy |
| Wars | Second World War Korean War |
| Production history | |
| No. built | 469 |
| Specifications | |
| Mass | 7 tonnes |
| Barrel length | 300 inches (7.6 meters) |
| Shell | 112 pounds (51 kg) |
| Calibre | 6-inch (152.4 mm) |
| Muzzle velocity | 2760 feet per second (840 m/s) |
| Maximum firing range | 25,480 yd (23,300 m) at 45 degrees elevation |
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