| Vickers 203 mm 50 caliber Pattern 1905 | |
|---|---|
 A Pattern 1905 gun in Suomenlinna fortress, Helsinki. Manufactured by the Obukhov factory in 1909. | |
| Type | Naval gun Coastal artillery Railway artillery |
| Place of origin | Great Britain |
| Service history | |
| In service | 1905-1970 |
| Used by | Russian Empire Soviet Union |
| Wars | World War I Russian Civil War Winter War World War II |
| Production history | |
| Designer | Vickers |
| Designed | 1905 |
| Manufacturer | Obukhov State Plant |
| Produced | 1905 |
| Specifications | |
| Mass | 14.4 t (15.9 short tons) |
| Length | 10.16 m (33 ft 4 in) 50 caliber |
| Barrel length | 9.95 m (32 ft 8 in) |
| Shell | Separate loading bagged charge and projectile |
| Shell weight | 112–139 kg (247–306 lb) |
| Calibre | 203 mm (8.0 in) |
| Breech | Welin breech block |
| Elevation | Casemates: -5° to +25° Turrets: -5° to +25° Open mounts: -5° to +30°[1] |
| Rate of fire | 3-4 rpm |
| Muzzle velocity | 792 m/s (2,600 ft/s) |
| Maximum firing range | 15.7 km (9.8 mi) at +25°[2] |
The 203 mm 50 caliber Pattern 1905 was a Russian naval gun developed by Vickers for export in the years before World War I that armed a variety of warships of the Imperial Russian Navy. Guns salvaged from scrapped ships found a second life as coastal artillery, railway artillery and aboard river monitors during the Russian Civil War. By 1941 it was estimated there were 36 coastal defense guns and two railroad mounts remaining.[1] During the 1930s a number were relined down to 180 mm (7.1 in) and re-designated the 180mm Pattern 1931-1933. These guns were used aboard Kirov-class cruisers or as coastal artillery and railway artillery.[2]
- ^ a b DiGiulian, Tony. "Russia / USSR 8"/50 (20.3 cm) Pattern 1905 - NavWeaps". www.navweaps.com. Retrieved 2017-07-27.
- ^ a b Friedman, Norman (2011). Naval weapons of World War One. S. Yorkshire: Seaforth Pub. ISBN 9781848321007. OCLC 751804655.