These guns were designed at the Obukhov factory for the Amur flotilla monitors. Some sixteen guns were built, but in 1914 twelve of them were removed and installed in the Naval Fortress of Peter the Great on the Hanko peninsula in the Gulf of Finland. Sixteen additional guns were ordered from the Obukhov factory to replace these, eight to be delivered in 1917 and the remaining eight to be delivered in 1918. However, due to the Russian Revolution, none of these were delivered and the ones installed in the fortress were captured by the Germans. As of 1941 there were four guns still remaining on the monitors of the Amur Flotilla.
Actual bore diameter was 152.4 mm (6.0").
| Designation | 6"/50 (15.2 cm) Pattern 1908 152 mm/50 (6") Pattern 1908 |
|---|---|
| Ship Class Used On | Schkval class river monitors |
| Date Of Design | N/A |
| Date In Service | 1908 |
| Gun Weight | 6.5 tons (6.85 mt) |
| Gun Length oa | 300 in (7.620 m) |
| Bore Length | 294 in (7.468 m) |
| Rifling Length | 240.98 in (6.121 m) |
| Grooves | 36 |
| Lands | N/A |
| Twist | N/A |
| Chamber Volume | 1,727 in3 (28.3 dm3) |
| Rate Of Fire | 4 rounds per minute |
| Type | Semi-fixed |
|---|---|
| Projectile Types and Weights | HE mod 1907: 104.2 lbs. (47.3 kg) HE mod 1915: 104.2 lbs. (47.3 kg) Shrapnel: 91.4 lbs. (41.46 kg) |
| Bursting Charge | HE mod 1907: 14.1 lbs. (6.4 kg) HE mod 1915: 14.6 lbs. (6.6 kg) Shrapnel: 1.23 lbs. (0.56 kg) |
| Projectile Length | HE mod 1907: 24 in (61 cm) HE mod 1915: 26.7 in (69 cm) Shrapnel: 21.7 in (55 cm) |
| Propellant Charge | HE mod 1907: 37.5 lbs. (17 kg) HE mod 1907 (reduced charge): 15.4 lbs. (7 kg) HE mod 1915: 37.5 lbs. (17 kg) Shrapnel: 28.7 lbs. (13 kg) |
| Muzzle Velocity | HE mod 1907: 2,700 fps (823 mps) HE mod 1907 (reduced charge): 1,640 fps (500 mps) HE mod 1915: 2,700 fps (823 mps) Shrapnel: 2,700 fps (823 mps) |
| Working Pressure | 2,325 kg/cm2 |
| Approximate Barrel Life | 400 rounds |
| Ammunition stowage pr gun | 208 rounds |
| Elevation | Distance |
|---|---|
| 30 degrees (Max elevation of turret) |
16,010 yards (14,640 m) |
| 30 degrees (reduced charge) |
10,610 yards (9,700 m) |
| Elevation | Distance |
|---|---|
| 30 degrees | 19,010 yards (17,385 m) |
Data from:
- "Sovetskie Boevye Korabli 1941-45: IV Vooruzhnie" (Soviet Warships 1941-45: Volume IV Armament) by A.V. Platonov
- "Entsiklopedia Otechestvennoi Artillerii" (Encyclopedia of Fatherland (Russian) Artillery) by A.V. Shirokorad
Special help from Vladimir Yakubov
- 21 May 2006
- Benchmark
- 12 August 2012
- Updated to latest template