| 130mm/55 Pattern 1913 naval gun B7 | |
|---|---|
 | |
| Type | Naval gun |
| Place of origin | Russian |
| Service history | |
| In service | 1914–1945? |
| Used by | Russia; Soviet Union |
| Wars | World War I, World War II |
| Production history | |
| Designed | 1912 |
| Manufacturer | Obukhov State Plant, Vickers Ltd. |
| Produced | 1913 - 1925 |
| No. built | 571 |
| Specifications (Pattern 1913) | |
| Mass | 5,290 kg (11,660 lb) (gun only) |
| Length | 7,150 mm (281 in) |
| Barrel length | 7,019 mm (23 ft 0.3 in) (bore) 5,862 mm (19 ft 3 in) (rifling) |
| Shell | HE mod 1911 |
| Shell weight | 36.86 kilograms (81.3 lb) |
| Caliber | 130 mm (5.12 in) |
| Breech | Welin breech block |
| Recoil | Hydro-spring |
| Elevation | -5° / + 30° |
| Traverse | 360° |
| Rate of fire | 5-8 shots/minute |
| Muzzle velocity | 861 m/s (2,820 ft/s) |
| Maximum firing range | 20,300 m (22,200 yd) |
The 130mm/55 B7 Pattern 1913 naval gun was a 5.1-inch naval gun used predominantly on ships of the Imperial Russian Navy and later by the Soviet Navy. It was manufactured mainly by the Obukhov State Plant (OSP) in St. Petersburg, as well as under licence by Vickers Limited in Great Britain. The gun was used as medium artillery on several Russian dreadnoughts and as main artillery on cruisers, as well as coastal artillery. It was succeeded by the 130 mm/50 B13 Pattern 1936 naval gun, which became the standard destroyer gun of the Soviet Navy during World War II.