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The 12"/50 caliber gun Mark 8 was a US naval gun mounted on the Alaska-class cruiser. The gun, like the "large cruiser" that mounted it, was intended to fill the gap between US "heavy cruisers" (6-8") and US battleships (14-16"). The name describes the size of the shells, 12 inches in diameter, and the length of the bore in calibers (50 bore ...
The 12"/50 caliber Mark 7 gun (spoken "twelve-inch-fifty-caliber") was a United States Navy's naval gun that first entered service in 1912. Initially designed for use with the Wyoming class of dreadnought battleships, the Mark 7 also armed the Argentine Navy's Rivadavia-class battleships.
12"/35 caliber gun United States: 1896-1920 305 mm (12.0 in) 12"/40 caliber gun United States: World War I 305 mm (12.0 in) 12"/45 caliber Mark 5 gun United States: World War I 305 mm (12.0 in) 12 inch/50 caliber naval gun United States Argentina: World War I - World War II - Cold War 305 mm (12.0 in) 12"/50 caliber Mark 8 gun United States
The 12-inch (305 mm)/45-caliber Mark 5 naval gun was designed as an incremental improvement upon the preceding American naval gun, the 12-inch/40-caliber gun Mark 4. [1] As such, it was a very similar weapon, having been lengthened by 5 calibers to allow for improved muzzle velocity, range, and penetrating power.
12-inch/50-caliber Mark 7 gun, 1910 US naval gun; 12-inch/50-caliber Mark 8 gun, 1939 US naval gun; 12-inch/50-caliber gun (Argentina), probably based on the 1910 US naval gun, used only in the Argentinian Rivadavia-class battleships; BL 12-inch Mk XI – XII naval gun, British naval gun; 30.5 cm SK L/50 gun, German naval gun; Obukhovskii 12 ...
M1895 12-inch gun on M1917 long-range high-angle barbette carriage, Corregidor, 2012 12-inch casemated gun, typical of batteries casemated in World War II Also during World War I, it was recognized that naval guns were rapidly improving and longer-range weapons were needed.
The guns mounted in the Virginia-class battleships were in an unusual two-level turret with the 8-inch (203 mm)/45 caliber guns on top of the larger 12-inch guns. This arrangement ultimately proved unsuccessful but helped the Navy in the successful development of superfiring turrets later used in the dreadnought South Carolina. [1]
United States: 1895 - 1945 305: 12-inch gun M1895 United States: 1895 - 1945 305: 30.5 cm SK L/50 gun Nazi Germany: 1909 - 1945 340: 340mm/45 Modèle 1912 gun France: World War II: 343: BL 13.5 inch naval gun Mk III disappearing gun United Kingdom: World War I - World War II 343: BL 13.5-inch Mk V railway gun United Kingdom: World War II 356 ...