The 16"/45-caliber Mark 6 gun is a naval gun designed in 1936 by the United States Navy for their Treaty battleships. It was introduced in 1941 aboard their North Carolina-class battleships, replacing
Battleship armament: 16"/45-caliber guns aboard the battleship USS South Dakota (BB-57).
A cut-away diagram of the 16-inch turrets on board the North Carolina class
The South Dakota class was a group of four fast battleships built by the United States Navy. They were the second class of battleships to be named after the 40th state; the first were designed in the
16-inch/45-caliber Mark 6 gun
…1941 aboard their North Carolina-class battleships, replacing the originally intended 14"/50-caliber Mark B guns and was also used for the follow-up South Dakota class. These battleships carried nine guns in three three-gun turrets. The gun was an improvement to the 16"/45-caliber Mark 5 guns used aboard the Colorado…
Alabama in Casco Bay, Maine, circa December 1942
South Dakota under construction in April 1940
Massachusetts' 5-inch gun battery