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BL 6 inch Mk XII naval gun 45-caliber United Kingdom: World War I - World War II 152.4 mm (6.00 in) BL 6 inch naval guns Mk XIII – XVIII United Kingdom: World War I - World War II 152.4 mm (6.00 in) BL 6 inch Mk XXII naval gun 50-caliber United Kingdom: 1920s - World War II 152.4 mm (6.00 in) BL 6 inch Mk XXIII naval gun 50-caliber
HMS Incomparable was the name given by Admiral John "Jackie" Fisher to a proposal for a very large battlecruiser which was suggested in 1915. The design was intended to mount 20-inch guns, which would have been the largest ever mounted on a warship.
The 3-inch 20 cwt gun was superseded by the QF 3.7-inch (94 mm) AA gun from 1938 onwards, but numbers of various Marks remained in service throughout World War II. In Naval use it was being replaced in the 1920s by the QF 4-inch (100 mm) Mk V on HA (high-angle) mounting.
In Germany, Ikaria further developed the FF gun as the MG FF, firing 20x80RB ammunition. And the Imperial Japanese Navy, after evaluating all three guns, ordered developments of the FF and FFL as the Type 99-1 and Type 99-2. The incorporation of the improvements of the FFS in a new anti-aircraft gun produced, in 1938, the Oerlikon SS. Oerlikon ...
Even the proposed Montana-class super-battleship of the United States Navy would not have matched the Type 94 guns, mounting twelve of the tested 16-inch/50-caliber Mark 7 guns found on the Iowa-class battleships, rather than the prototype 18-inch Mark 1. Six 20-inch guns were the proposed armament of HMS Incomparable, a very large ...
The 16-inch/50 caliber Mark 7 guns of the forward turret of the battleship USS Wisconsin (BB-64) fire at enemy targets ashore on the Korean Peninsula on 30 January 1952 during the Korean War. Employees working with the automatic 16-inch powder stacking machine at Naval Ammunition Depot Hingham, Mass. during World War II.
BL 16-inch Mark IV naval gun [29] Naval gun (experimental prototype; never installed to a ship) 1943 United Kingdom: 1 partial protype made; one BL 16-inch Mark III naval gun was converted into a partial prototype of BL 16-inch Mark IV naval gun; this partial prototype was experimentally fired; never used in combat 406 40.6 cm SK C/34 gun
These built-up guns consisted of a rifled tube encased within an inner and outer jacket with a horizontal sliding breech block. The breech was sealed with an 18 kg (40 lb) brass case containing 30 kg (66 lb) of smokeless powder with a 160 gram (5.6 oz) gunpowder igniter.