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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 .
There have been a number of 12" guns with 50 caliber length: 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 ...
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 ...
BL 6 inch Mk XII naval gun, a British naval gun; MK-3-12 (1907), a Russian naval main weapon that used three 12-inch guns in a single mounting; Mark 12 torpedo (1930), an American 21-inch torpedo; 5"/38 caliber gun or Mark 12 5"/38 (1934), a widely used American 5-inch naval gun; 18 inch Mark XII torpedo (1935), a British 18 inch torpedo
The Mark 3, gun Nos. 15–48 and 50–56, was constructed of tube, jacket, and eight hoops. It was found that the early guns suffered from excessive bore erosion, in an attempt to fix this the Navy reduced the propellant charges to reduce the muzzle velocity, because of this the Mark 4, gun Nos. 49, 58–60, 150–154, and 179, was similar to ...
This increases the accuracy of the weapon by removing vibration and pressure exerted on the barrel by the rest of the gun. The first SPRs used PRI Gen I or Gen II carbon-fiber free-float tubes. The SPR/A, SPR/B, and MK 12 MOD 1 all use the Knights Armament Company M4 Match Free-Floating Rail Adapter System, KAC part number 99167. [2]
The Navy's Policy Board call for a variety of large caliber weapons in 1890, with ranges all the way up to 16-inch (406 mm), led to the development of the 12-inch (305 mm)/35 caliber gun. The Mark 1, gun Nos. 1–8, was constructed of gun steel, having a tube, jacket, ten hoops and a locking ring. The Mod 0, the original design, had the inner ...
10 cm/65 Type 98 naval gun; 10 cm/50 Type 88 naval gun; 12-inch/50-caliber gun (Argentina) 12-inch/50-caliber Mark 8 gun; 12 cm/45 10th Year Type naval gun; 12.7 cm/40 Type 89 naval gun; 12.7 cm/50 Type 3 naval gun; 12.7 cm SK C/34 naval gun; 14-inch/45-caliber gun; 14-inch/50-caliber gun; 14 cm/40 11th Year Type naval gun; 14 cm/50 3rd Year ...