BL 4-inch Mk IX naval gun
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The BL 4-inch Mk IX naval gun was a British medium-velocity naval gun introduced in 1917 as secondary armament on the Renown-class battlecruisers and Glorious-class "large light cruisers", but which s
On Flower-class corvette HMCS Calgary in World War II
Original aft triple mounts on HMS Repulse c. 1916–1917
Coast defence gun and crew at Fort Crosby near Liverpool, UK, August 1940
Cleaning the breech on transport St Essylt, Suez 1942
QF 4-inch naval gun Mk XIX
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The QF 4-inch Mk XIX gun was a British low-velocity 4-inch 40-calibre naval gun used to arm small warships such as Bathurst and Castle-class corvette and some River-class frigate in World War II, main
BL 4-inch Mk IX naval gun
…British service: all subsequent guns have used charges in metal cartridges "QF". It was succeeded on new small warships built in World War II by the QF 4-inch Mk XIX gun which fired a slightly heavier shell at much lower velocity and had a high-angle mounting which added anti-aircraft capability. On board HMCS Sackville…
Crew of HMAS Cowra at gun drill, Tarakan Island, June 1945
Canadian gunners with fixed rounds
Starshell