These were of the Elswick Pattern "I" and were used on Italy's equivalent to a battlecruiser. This Italian version allowed all-around loading and the mountings were electrically powered.
After these ships were scrapped, their guns were reused on floating batteries.
Designation | 12"/40 (30.5 cm) |
---|---|
Ship Class Used On | Benedetto Brin and Regina Elena Classes Pontoons GM191 and 192 |
Date Of Design | N/A |
Date In Service | 1908 |
Gun Weight | 50.8 tons (54.3 mt) |
Gun Length oa | N/A |
Bore Length | 480.0 in (12.192 m) |
Rifling Length | N/A |
Grooves | N/A |
Lands | N/A |
Twist | N/A |
Chamber Volume | N/A |
Rate Of Fire | about 1 round per minute |
Type | Bag |
---|---|
Projectile Types and Weights | APC: 919 lbs. (417 kg) |
Bursting Charge | N/A |
Projectile Length | N/A |
Propellant Charge | 194 lbs. (88 kg) |
Muzzle Velocity | 2,559 fps (780 mps) |
Working Pressure | N/A |
Approximate Barrel Life | N/A |
Ammunition stowage per gun | N/A |
Designation | Single Turrets: Regina Elena (2) Twin Turrets: Benedetto Brin (2) |
---|---|
Weight | N/A |
Elevation | about -5 / +20 degrees |
Elevation Rate | N/A |
Train | about +150 / -150 degrees |
Train Rate | N/A |
Gun recoil | N/A |
Loading Angle | N/A |
These mountings were generally similar in design to the British 12" (30.5 cm) BVI mountings, although the Italian mountings allowed all-around loading and those for the Regina Elena class were electrically powered, used springs for the run out and elevation was by arc and pinion gear.
Data from:
- "Naval Weapons of World War Two" by John Campbell
- "Italian Warships of World War II" by Aldo Fraccaroli
- "The Big Gun: Battleship Main Armament 1860-1945" by Peter Hodges
Special help by Cliff McMullen
- 14 April 2007
- Benchmark
- 26 May 2012
- Updated to latest template