Anti-torpedo boat gun of the late 1800s. Some of these were converted to AA guns during World War I. None appear to have survived long enough to serve during World War II.
Designation | 12-pdr [3"/50 (7.62 cm)] 18cwt QF Mark I |
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Ship Class Used On | King Edward VII (last three units), Lord Nelson, Dreadnought and Minotaur classes Monitors: Abercrombie, Lord Clive, Marshal Ney and Erebus classes, plus M15 through M28 |
Date Of Design | N/A |
Date In Service | N/A |
Gun Weight | 0.9 tons (1.0 mt) |
Gun Length oa | 154.7 in (3.929 m) |
Bore Length | about 150 in (3.810 m) |
Rifling Length | N/A |
Grooves | N/A |
Lands | N/A |
Twist | N/A |
Chamber Volume | N/A |
Rate Of Fire | 15 rounds per minute |
Type | Separate |
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Weight of Complete Round | N/A |
Projectile Types and Weights | HE 2crh: 12.5 lbs. (5.67 kg) |
Bursting Charge | N/A |
Projectile Length | N/A |
Propellant Charge | 2.75 lbs. (1.25 kg) MD |
Muzzle Velocity | 2,600 fps (792 mps) |
Working Pressure | N/A |
Approximate Barrel Life | 1,200 rounds |
Ammunition stowage per gun | Monitors: 300 rounds Lord Nelson: 230 rounds Dreadnought: 300 rounds Others: N/A |
Designation | |
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Weight | 1.71 tons (1.74 mt) |
Elevation | -10 / +20 degrees |
Elevation Rate | Manually operated, only |
Train | 360 degrees |
Train Rate | Manually operated, only |
Gun recoil | N/A |
Some guns were later converted for HA use. From the Australian War Memorial picture H18888 noted above, these appeared to have used very simple, extemporized mountings.
Data from:
- "British Battleships of World War One" by R.A. Burt
- "Big Gun Monitors: The History of the Design, Construction and Operation of the Royal Navy's Monitors" by Ian Buxton
- "British Battleships: 1860 - 1950" by Oscar Parkes
Special help from Rod Butcher
- 28 December 2008
- Benchmark
- 04 February 2014
- Added ammunition stowage and number of guns
- 21 May 2014
- Added ammunition stowage for Lord Nelson class
- 29 November 2015
- Changed Vickers Photographic Archive links to point at Wayback Archive