11-inch gun M1877
The 11-inch gun M1877 was a Russian 280 mm (11 in) coastal, fortress and siege gun that was used in the Russo-Japanese War and World War I.
| 11-inch gun M1877 | |
|---|---|
An 11-inch M1877 at Suomenlinna. | |
| Type | Coastal artillery Fortress gun Siege gun |
| Place of origin | Russian Empire |
| Service history | |
| In service | 1880-? |
| Used by | Russian Empire Finland German Empire |
| Wars | Russo-Japanese War World War I |
| Production history | |
| Designer | Obukhov State Plant |
| Designed | 1877 |
| Manufacturer | Obukhov State Plant Motovilikha Plants |
| Produced | 1880 |
| Specifications | |
| Barrel length | 6.1 m (20 ft) L/21.8 calibers |
| Shell | Separate-loading, bagged charges and projectiles. |
| Shell weight | 182–250 kg (401–551 lb) |
| Caliber | 280 mm (11 in) |
| Breech | Horizontal sliding-block |
| Recoil | Hydro-gravity |
| Carriage | Garrison mount |
| Elevation | -6° to +20° |
| Traverse | 120° |
| Rate of fire | 1 round every 3 minutes |
| Muzzle velocity | 518 m/s (1,700 ft/s) |
| Maximum firing range | 12.5–14.4 km (7.8–8.9 mi) |
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