180mm Pattern 1931-1933
The 180mm Pattern 1931-1933 were a family of related naval guns of the Soviet Navy in World War II, which were later modified for coastal artillery and railway artillery roles. They were the primary armament of the Soviet Union's first cruisers built after the Russian Civil War.
| 180mm Pattern 1931-1933 | |
|---|---|
MK-1-180 single turrets aboard the Soviet light cruiser Krasnyi Kavkaz | |
| Type | Naval gun Coastal artillery Railway gun |
| Place of origin | Soviet Union |
| Service history | |
| In service | 1931 - 1990s |
| Used by | Soviet Union |
| Wars | World War II |
| Production history | |
| Designed | 1929 |
| Produced | 1931-1933 |
| Variants | 180mm/60 Pattern 1931 180mm/57 Pattern 1932 180mm/56 Pattern 1933 |
| Specifications | |
| Mass | 17–18.5 t (18.7–20.4 short tons) |
| Length | 10.2–10.6 m (33–35 ft) |
| Barrel length | 8–8.2 m (26–27 ft) |
| Shell | Separate loading bagged charge and projectile |
| Shell weight | 97.5 kg (215 lb) |
| Caliber | 180 mm (7.1 in) 56-60 Caliber |
| Elevation | Single naval mounts: -5°to +60° Triple naval mounts: -5° to +50° Coastal & Rail mounts: -0° to +50° |
| Rate of fire | 4-5 rpm |
| Muzzle velocity | 900 m/s (3,000 ft/s) |
| Maximum firing range | 37.1–38.5 km (23.1–23.9 mi) at +50° |
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