| BL 14-inch Mark VII | |
|---|---|
 Gunners and forward turrets of HMS Duke of York after the Battle of North Cape | |
| Type | Naval gun |
| Place of origin | UK |
| Service history | |
| In service | 1940-1951 |
| Used by | UK |
| Production history | |
| Designed | 1937 |
| No. built | 78 |
| Specifications | |
| Mass | 78.99 long tons (80.26 t) |
| Length | 54 ft 3 in (16.54 m) |
| Barrel length | 52 ft 6 in (16.00 m) bore (45 calibres) |
| Shell | 1,590 lb (720 kg) |
| Calibre | 14 inches (355.6 mm) |
| Elevation | Naval: 41° Coastal: 45° |
| Rate of fire | 2 rounds per minute |
| Muzzle velocity | Standard Charge: 2,483 ft/s (757 m/s) (new gun), 2,400 ft/s (730 m/s) (25% wear)[1] |
| Maximum firing range | 38,600 yd (35,300 m) at 40° with new linings, or 36,500 yd (33,400 m) at 40.7° (25% wear) |
The BL 14-inch Mk VII naval gun[2] was a breech loading (BL) gun designed for the battleships of the Royal Navy in the late 1930s. This gun armed the King George V-class battleships during the Second World War.
- ^ With 338.3 lb (153.5 kg) cordite.
- ^ Mk VII = Mark 7. Britain used Roman numerals to denote Marks (models) of ordnance until after World War II. This was the seventh model of BL 14-inch naval gun.