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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.
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).
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.
QF 4 inch Mk XVI naval gun 45-caliber United Kingdom: World War II 102 mm (4.0 in) EOC 4 inch 50 caliber United Kingdom: World War I - World War II 102 mm (4.0 in) QF 4 inch Mk XIX naval gun 40-caliber United Kingdom: World War II 102 mm (4.0 in) QF 4 inch naval gun Mk XXIII 33-caliber United Kingdom: Cold War - Borneo confrontation
The first US Navy 16-inch gun was the 16-inch/45 caliber Mark 1 gun, which armed the Colorado-class battleships launched 1920–21. [ 5 ] [ 6 ] The second Navy design, the Mark 2, was intended as armament for the planned South Dakota -class battleships , and also selected for the modified design of the Lexington -class battlecruisers ...
16-inch naval gunfire shells. The large caliber guns were designed to fire two different 16-inch shells: an armor-piercing round for anti-ship and anti-structure work and a high explosive round designed for use against unarmored targets and shore bombardment.
The 16-inch gun was a built-up gun constructed in a length of 45 calibers. The Mark 1 had an A tube, jacket, liner, and seven hoops , four locking rings and a screw-box liner. When the gun was designed in August 1913 it was referred to as the "Type Gun (45 Cal.)" as an effort to conceal the gun's true size of 16 inches.
In 1922, the terms of the Washington Naval Treaty caused the US Navy to cancel the South Dakota-class battleships and the Lexington-class battlecruisers, surplusing 16-inch/50 caliber Mark II and Mark III barrels. Initially, 20 guns were transferred to the Army, which built a new version of the M1919 mount for the naval guns.