QF 4.5-inch Mk I – V naval gun
Naval gun / From Wikipedia, the free encyclopedia
The QF 4.5 inch gun has been the standard medium-calibre naval gun used by the Royal Navy as a medium-range weapon capable of use against surface, aircraft and shore targets since 1938. This article covers the early 45-calibre family of guns up to the 1970s. For the later unrelated 55-calibre Royal Navy gun, see 4.5 inch Mark 8 naval gun. Like all British nominally 4.5 inch naval guns, the QF Mk I has an actual calibre of 4.45 inches (113 mm).[5][6]
Quick Facts Ordnance QF 4.5 inch gun Mk I, II, III, IV, V, Type ...
Ordnance QF 4.5 inch gun Mk I, II, III, IV, V | |
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Type | Naval gun Anti-aircraft gun |
Place of origin | United Kingdom |
Service history | |
Used by | British Commonwealth |
Wars | Second World War Korean War Falklands War |
Production history | |
No. built | Navy: c. 800 Army: 474 |
Specifications | |
Barrel length | Bore: 16 ft 8 in (5.08 m) 45 calibres |
Shell | Fixed or Separate QF 113 640–645 mm R[1] |
Shell weight | 55 pounds (24.9 kg)× |
Calibre | 4.45-inch (113 mm) |
Breech | Mks I - IV: Horizontal sliding block Mk V: Vertical sliding block |
Elevation | 0° to +80° |
Traverse | 360°[2] |
Rate of fire | 12 RPM for Mk II BD mount. 16 RPM recorded for Mk III UD mount.[3] |
Muzzle velocity | 2,449 ft/s (746 m/s)[4] |
Maximum firing range | 20,750 yd (18,970 m) at 2,449 ft/s (746 m/s) AA:41,000 ft (12,500 m)[4] |
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