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Complementing the 16-in/50 caliber Mark 7 gun was a fire control computer, the Ford Instrument Company Mark 8 Range Keeper. This analog computer was used to direct the fire from the battleship's big guns, taking into account factors including the speed of the targeted ship, the projectile's travel time, and air resistance.
The U.S. Navy had the 16"/50-caliber Mark 2 guns left over from the canceled Lexington-class battlecruisers and South Dakota-class battleships of the early 1920s. However it was already apparent that the Mark 2 was too heavy to arm the North Carolina and new South Dakota (1939) battleship classes which had to adhere to the 35,000 ton standard displacement set by the Second London Naval Treaty.
USS Alabama (BB-60) is a retired battleship. She was the fourth and final member of the South Dakota class of fast battleships built for the United States Navy in the 1940s. The first American battleships designed after the Washington Treaty system began to break down in the mid-1930s, they took advantage of an escalator clause that allowed increasing the main battery to 16-inch (406 mm) guns ...
234 mm (9.2 in) BL 9.2 inch gun Mk I - VII United Kingdom: 1880s - 1918 234 mm (9.2 in) BL 9.2 inch Mk VIII 40-caliber United Kingdom: 1890s - 1910s 234 mm (9.2 in) BL 9.2 inch Mk X 46-caliber United Kingdom: 1900s - World War I 234 mm (9.2 in) BL 9.2 inch Mk XI 50-caliber United Kingdom: World War I 240 mm (9.4 in) 240mm/50 Modèle 1902 gun
Model of the South Dakota-class battleship, including 12 16"/50 Mark 2 guns. The first example of a US 16-inch gun was an Army weapon, the M1895, approved for construction in 1895 and completed in 1902; only one was built. [4] The first US Navy 16-inch gun was the 16-inch/45 caliber Mark 1 gun, which armed the Colorado-class battleships ...
The early main battery fire control consisted of the Fire Control Tower, [7] two Mark 38 Gun Fire Control Systems (GFCS), [8] and fire control equipment located in two of the three turrets. [9] As modernized in the 1980s, each turret carried a DR-810 radar that measured the muzzle velocity of each gun, which made it easier to predict the ...
This was a paper case about 16 inch (406 mm) long filled with slow-burning composition which burnt rather more than one inch (25 mm) per minute. Later again the charge was exploded by paper tubes (sometimes called Dutch tubes ) filled with powder and placed in the vent and ignited by a port-fire.
An improved weapon, the BL 16-inch Mark II was designed for the Lion-class battleship which was a successor to the King George V class taking advantage of the larger weapon allowed under the London Naval Treaty from March 1938. This "new design" of 16-inch gun fired a shell that weighed 2,375 pounds (1,077 kg).