QF 4 inch Mk XIX naval gun
|Ordnance QF 4 inch gun Mk XIX|
Crew of HMAS Cowra at gun drill, Tarakan Island, June 1945
|Used by||Royal Australian Navy|
|Wars||World War II|
|Barrel length||160 inches (4.064 m) bore (40 calibres)|
|Shell||Fixed QF HE, Starshell|
|Shell weight||35 pounds (16 kg)|
|Calibre||4-inch (101.6 mm)|
|Breech||horizontal sliding block|
|Muzzle velocity||396 metres per second (1,300 ft/s)|
|Maximum firing range||8,870 metres (9,700 yd)|
The QF 4-inch Mk XIX gun[note 1] was a British low-velocity 4-inch 40-calibre naval gun used to arm small warships such as Bathurst and Castle-class corvettes and some River-class frigates in World War II, mainly against submarines.
It succeeded the higher-velocity World War I-era BL 4-inch Mk IX (typically deployed on Flower-class corvettes in the escort role), increasing the shell weight from 31 pounds (14 kg) to 35 pounds (16 kg) and its high-angle mounting added some anti-aircraft capability and allowed it to fire starshells to illuminate the battle area at night.
Canadian gunners with fixed rounds
- On HMAS Castlemaine at Williamstown, Victoria, Australia.
- On the parade ground at the Irish Naval Service Base, Haulbowline, Co. Cork, Ireland
- Mk XIX = Mark 19. Britain used Roman numerals to denote Marks (models) of ordnance until after World War II. This was the nineteenth model of British QF 4-inch gun
- http://navalhistory.flixco.info/H/119171x53535/8330/a0.htm : quotes from John Campbell, "Naval Weapons Of World War Two", Annapolis : Naval Institute Press, 1985, ISBN 0-87021-459-4
- John Campbell, "Naval Weapons Of World War Two", Annapolis : Naval Institute Press, 1985, ISBN 0-87021-459-4
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- Tony DiGiulian, Britain 4"/40 (10.2 cm) QF Mark XIX
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