Credit
B25es · CC BY-SA 3.0 · Resized · CC BY-SA 3.0 · Source ↗ · Modified
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Measured figures
QF 3.7-in heavy anti-aircraft gun · Length
Single source28 ft 3 in (8.6 m)[source]QF 3.7-in heavy anti-aircraft gun
Configuration
| Specification | M45 quad mount | QF 3.7-inch AA gun |
|---|---|---|
| Type | Anti-aircraft gun , heavy machine gun[source] | Anti-aircraft gun[source]QF 3.7-in heavy anti-aircraft gun |
| Place of origin | United States[source] | United Kingdom[source]QF 3.7-in heavy anti-aircraft gun |
| Wars | World War II First Indochina War Korean War Vietnam War Portuguese Colonial War Indo-Pakistani War of 1965 Lebanese Civil War 1978 South Lebanon conflict Nicaraguan Revolution 1982 Lebanon War Sino-Vietnamese War Third Indochina War Salvadoran Civil War[source] | World War II Indo-Pakistani War of 1947–1948[source]QF 3.7-in heavy anti-aircraft gun |
QF 3.7-in heavy anti-aircraft gun · Width
Single source7 ft 10 in (2.4 m)[source]QF 3.7-in heavy anti-aircraft gun
QF 3.7-in heavy anti-aircraft gun · Height
Single source8 ft 2 in (2.5 m)[source]QF 3.7-in heavy anti-aircraft gun
Effective; effective AA
Single sourceEffective; maximum AA
Single sourceMaximum
Single sourceMaximum; horizontal
Single source4,900 ft (1.5 km) (effective AA) 15,000 ft (4.5 km) (maximum AA)[source]
1.1 mi (1.8 km) (horizontal) 1.6 mi (2.5 km) (maximum)[source]
Maximum; QF 3.7-in heavy anti-aircraft gun · Ceiling Mk I–II Ceiling
Single sourceMaximum; QF 3.7-in heavy anti-aircraft gun · Horizontal
Single sourceMuzzle velocity
Single source2,900 ft/s (890 m/s)[source]
QF 3.7-in heavy anti-aircraft gun · Mk I–III
Single sourceQF 3.7-in heavy anti-aircraft gun · Mk VI
Single sourceMk I–III: 2,598–2,670 ft/s (792–814 m/s) Mk VI : 3,425 ft/s (1,044 m/s)[source]QF 3.7-in heavy anti-aircraft gun
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Shell | .50 BMG (12.7×99mm NATO)[source] | Mk I–III: Fixed QF 94 x 675mm R Mk VI: 94 x 857mm R[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Shell weight | 21 oz (.6 kg)[source] | 28 pounds (13 kg)[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Action | Short recoil-operated[source] | — |
|---|
| Elevation | -5° to +90°[source] | −5 to +80 degrees[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Traverse | 360°[source] | 360 degrees[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Feed system | Belt-fed (M2 or M9 links)[source] | — |
|---|
| Manufacturer | Maxon Manufacturing Co.[source] | — |
|---|
| In service | — | 1937–present (the Nepalese Army still has 45 in service)[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Used by | — | UK & other Commonwealth countries[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Designer | — | Vickers[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Designed | — | 1937[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Produced | — | 1937–1945[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| No. built | — | approx. 10.000[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Breech | — | Horizontal sliding-wedge[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Recoil | — | Hydro-pneumatic[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Carriage | — | Mobile and static versions[source]QF 3.7-in heavy anti-aircraft gun |
|---|
| Reported operators |
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Maximum; QF 3.7-in heavy anti-aircraft gun · Mk VI
Single sourceMaximum; QF 3.7-in heavy anti-aircraft gun · Slant
Single sourceHorizontal: 3.5 mi (5.6 km) Slant: 7.5 mi (12 km) Ceiling Mk I–II: 30,000 ft (9 km) Ceiling Mk VI: 45,000 ft (13.7 km)[source]QF 3.7-in heavy anti-aircraft gun