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Gun No. 213 had a liner. The gun was described as a 5-inch (127 mm) gun but with a 4-inch bore in the 1902 handbook, this indicated its higher power and also the fact the barrel was actually more the size of a 5-inch/40 caliber gun than a 4-inch gun. The ammunition was about 7 lb (3.2 kg) heavier than a 4-inch/40 caliber round.
The 4″/40 caliber gun (spoken "four-inch-forty-caliber") was used for the secondary batteries on the United States Navy's battleship Iowa, Columbia-class protected cruisers, and the armored cruiser New York, and was the primary batteries on the gunboats Nashville, Wilmington, and Helena.
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 Mk V was superseded by the QF 4 inch Mk XVI as the HA (i.e. anti-aircraft) gun on new warships in the 1930s, but it continued to serve on many ships such as destroyers, light and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]
The QF 4-inch gun Mk IV [note 1] was the main gun on most Royal Navy and British Empire destroyers in World War I. It was introduced in 1911 as a faster-loading light gun successor to the BL 4 inch Mk VIII gun. Of the 1,141 produced, 939 were still available in 1939. [1] Mk XII and Mk XXII variants armed many British interwar and World War II ...
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 corvette and some River-class frigate in World War II, mainly against submarines.
120 mm (4.7 in) QF 4.7 inch Gun Mk I - IV 40-caliber United Kingdom: Second Boer War - World War I 120 mm (4.7 in) QF 4.7 inch Mk V naval gun 45-caliber United Kingdom Japan: World War I - World War II 120 mm (4.7 in) QF 4.7 inch Mk VIII naval gun 40-caliber United Kingdom: World War II 120 mm (4.7 in) QF 4.7 inch Mk IX & XII 45-caliber
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The gun was intended to be a more powerful alternative to the quick-firing 3-inch QF 12-pounder gun, and a faster-firing replacement for the BL 4-inch gun. It was mounted on the following ships : Pelorus-class third-class protected cruisers of 1896; Condor-class sloops of 1898; Cadmus-class sloops of 1900; Topaze-class third-class cruisers ...