A fine view of the sheer scale and complexity of the big gun turret for a Battleship. In this case, this appears to be a British 15" gun mounting, of the type mounted on R class batlleships, "Queen Elizabeth" class and Renown and Repulse.
President Theodore Roosevelt (standing on 12" gun turret at right). Addresses officers and crewmen on the after deck of USS Connecticut (Battleship # 18), in Hampton Roads, Virginia, upon her return from the Atlantic Fleet's cruise around the World, 22 February 1909.
Smoke billows from the muzzles of the Mark 7 16-inch/50-caliber guns in each of the three main gun turrets aboard the battleship USS MISSOURI (BB-63) after the ship fired multiple slavos during exercise RimPac "90 near Hawaii.
The other half of Bismarck's fate (see HMS King George V photo nearby): HMS Rodney's three triple 16in gun turrets, all carried forward of the bridge. Rodney and her sister Nelson were the only 16 in ships to serve in the Royal Navy.