
A more powerful gun than the Hotchkiss 3-pdr, this weapon was used as a secondary gun on cruisers and later as an AA weapon during World War I.
Actual bore length was 50.05 calibers.
Designation | Vickers 3-pdr (1.4 kg) [1.85"/50 (47 mm)] QF Marks I and II |
---|---|
Ship Class Used On | Many |
Date Of Design | N/A |
Date In Service | about 1900 |
Gun Weight | about 650 lbs. (295 kg) |
Gun Length oa | 98.9 in (2.512 m) |
Bore Length | 92.6 in (2.352 m) |
Rifling Length | N/A |
Grooves | (20) Uniform RH 1 in 30 |
Lands | N/A |
Twist | N/A |
Chamber Volume | N/A |
Rate Of Fire | 25 rounds per minute |
Type | Fixed |
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Weight of Complete Round | HE: 6.6 lbs. (3.0 kg) |
Projectile Types and Weights | HE: 3.3 lbs. (1.5 kg) |
Bursting Charge | N/A |
Projectile Length | N/A |
Propellant Charge | 0.83 - 1.0 lbs. (0.38 - 0.45 kg) |
Muzzle Velocity | HE: 2,575 fps (785 mps) |
Working Pressure | N/A |
Approximate Barrel Life | about 5,000 rounds |
Ammunition stowage per gun | Monitors of World War I carried 300 rounds per gun |
Elevation | Distance |
---|---|
12 degrees | 5,600 yards (5,120 m) |
AA Ceiling @ 80 degrees | 15,000 feet (4,570 m) |
Effective AA Range | about 2,000 yards (1,800 m) |
Designation | Single LA Mountings: Mark I and Mark II Single HA Mountings: Mark III HA |
---|---|
Weight | 0.7 tons (0.8 mt) |
Elevation | Marks I and II: -5 / +30 degrees Marks III HA: -5 / +80 degrees |
Elevation Rate | Manually operated, only |
Train | 360 degrees |
Train Rate | Manually operated, only |
Gun recoil | N/A |
Data from:
- "Big Gun Monitors: The History of the Design, Construction and Operation of the Royal Navy's Monitors" by Ian Buxton
- "British Cruisers of World War Two" by Alan Raven and John Roberts
- 13 May 2006
- Benchmark
- 12 February 2012
- Updated to latest template