Originally designed by Krupp in 1886. In service, it was noted that the barrel was weak and in 1891 they were chase hooped by the Obukhovski factory to strengthen them.
These guns were removed from most of ships by 1909 at which time there were attempts by the Naval Ministry to convince the Artillery ministry to use them for coastal defense. However, by then their rate of fire was 1 round every 10 minutes and they were deemed useless. In spite of this, at least 11 of these guns were kept in storage until 1917.
Designation | 12"/35 (30.5 cm) Pattern 1886 |
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Ship Class Used On | Chesma class, Georgy Pobedonosets class, Navarin |
Date Of Design | Krupp guns: 1886 Obukhovski guns: 1891 |
Date In Service | 1891 |
Gun Weight | 56 tons (57 mt) |
Gun Length oa | 421 in (10.700 m) |
Bore Length | 385 in (9.770 m) |
Rifling Length | N/A |
Grooves | 68 |
Lands | N/A |
Twist | N/A |
Chamber Volume | N/A |
Rate Of Fire | 1 shot every 2 minutes and 22 seconds |
Type | Bag |
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Projectile Types and Weights | "Light" shell AP and HE: 731.3 lbs. (331.7 kg) "Heavy" shell AP and HE: 1,003 lbs. (455 kg) |
Bursting Charge | "Heavy" HE: 54 lbs. (24.5 kg) |
Projectile Length | "Light" rounds: about 32.4 in (82.3 cm) "Heavy" rounds: 50.4 in (128 cm) |
Propellant Charge | "Light" rounds: 339.5 lbs (154 kg) "Heavy" rounds: 325 lbs. (147.4 kg) Around 1900 "smokeless charges" of 68.8 kg were introduced. These had the same ballistic result as the older propellants. |
Muzzle Velocity | "Heavy" round: 2,000 fps (610 mps) "Light" round: 2,090 fps (637 mps) |
Working Pressure | N/A |
Approximate Barrel Life | N/A |
Elevation | Distance |
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6 degrees | 6,600 yards (6,040 m) |
15 degrees | 11,600 yards (10,610 m) |
Designation | Chesma and Georgy Pobedonosets: Twin Barbette Mount Navarin: Twin Turret Mount |
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Weight | Chesma and Georgy Pobedonosets: 157 tons (160 mt) Navarin: 167 tons (169 mt) |
Elevation | Chesma and Georgy Pobedonosets: -2 / +15 degrees Navarin: -4 / +12.5 degrees |
Rate of Elevation | N/A |
Train |
|
Rate of Train |
|
Gun Recoil | Chesma and Georgy Pobedonosets: 39 in (99 cm) Navarin: 28 in (71 cm) |
Loading Angle | N/A |
Data from:
- "Entsiklopedia Otechestvennoi Artillerii" (Encyclopedia of Fatherland [Russian] Artillery) by A.V. Shirokorad
Other:
- Citadel Magazine
Special help from Vladimir Yakubov