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The Royal Navy did not adopt the gun, but several were adopted by the army as coast defence guns around the United Kingdom from 1900 onwards. [1] In World War I the UK acquired 620 [3] of a version manufactured in Japan, and mounted them as anti-submarine guns on merchant ships and troop ships, under the designation Mark V*.
QF 4.7 inch Mk V naval gun Japanese-built gun, armed British merchant ships in World War I & World War II; BL 4.7 inch /45 naval gun British naval gun used 1918 to 1945 [1] QF 4.7 inch Mk VIII naval gun British anti-aircraft gun on Nelson class battleships in World War II; 4.7 inch QF Mark IX & XII British naval guns deployed on destroyers in ...
Single Mk IX gun on HMCS Assiniboine with gunners sheltering behind the shield. The 4.7 inch QF Mark IX and Mark XII were 45-calibre, 4.7-inch (120 mm) naval guns which armed the majority of Royal Navy and Commonwealth destroyers in World War II, [1] and were exported to many countries after World War II as the destroyers they were mounted on were sold off.
BL 7.5 inch Mk I naval gun 45-caliber United Kingdom: World War I 190.5 mm (7.50 in) BL 7.5 inch Mk II - V naval gun various 50-caliber guns United Kingdom: World War I 190.5 mm (7.50 in) BL 7.5 inch Mk VI naval gun 45-caliber United Kingdom: 1920s - World War II 190.5 mm (7.50 in) Cannone da 190/45 United Kingdom Italy
Naval gun on display at the Museo Tecnico Navala Della Spezia, Italy [34] Japanese-built 4.7"/40 Mark IV in the Military Museum of Finland in Suomenlinna, Finland; 4.7-inch QF Gun, No. 563, Mark IV, manufactured in 1894 by Royal Gun Factory,on Percy Scott carriage,preserved in the courtyard of Indian Museum at Kolkata (Calcutta)
Mk II was a monobloc-barrel (i.e. single-piece, typical of small to medium World War II guns) gun of similar performance introduced in World War II to replace the worn-out Mk I guns on surviving ships. These were the only BL-type 4.7-inch guns in British service; all others have been of the QF-type.
It was typically used on cruisers and heavier ships, although V and W-class destroyers of 1917 also mounted the gun. Mk V was superseded by the QF 4 inch Mk XVI as the HA (i.e. anti-aircraft) gun on new warships in the 1930s, but it continued to serve on many ships such as destroyers, light and heavy cruisers in World War II. [4]
From the BL Mark I gun of 1916 the 4.7-inch (120 mm) calibre was the mid-calibre weapon of the Royal Navy, used particularly on destroyers.Apart from some ships armed with QF 4-inch Mk V guns due to shortages, it remained the standard weapon for destroyers up to the W-class destroyers of 1943.