USS Arizona (BB-39) is an American battleship, laid down in 1914, launched in June 1915 and commissioned by the US Navy in October 1916. The ship was 185 m long, 32.4 m wide and had a gross displacement of 36,500 tons. . The maximum speed of the battleship USS Arizona reached 21 knots. The main armament consisted of 12 356-mm guns in four towers, three in each, and the auxiliary - 22 127-mm guns. USS Arizona was the second and last battleship of the Pennsylvania class. Units of this type belonged to the so-called standard battleships, that is, ships with similar combat characteristics, sizes and capabilities, although divided into different classes, which entered service with the US Navy in the period 1916-1923. Battleships of the "Pennsylvania" type were actually a slightly enlarged battleship of the "Nevada" type. The main differences were the installation of more powerful main armament (12 guns of 356 mm caliber instead of 10 guns of the same caliber) and auxiliary weapons, as well as strengthening armor and increasing the size of battleships. USS Arizona (BB-39) saw very limited action in World War I, serving primarily as a training ship and convoy duty in the Atlantic. In the interwar period, the tank underwent major reconstruction in 1929-1931. As a result, masts were changed, fire control systems were improved, and anti-aircraft weapons were significantly strengthened. At the start of World War II in the Pacific, the USS Arizona was based at Pearl Harbor, where it was sunk by Japanese aircraft. The destruction of the ship was so significant that it was not decided to raise it from the bottom and overhaul it. Since 1962, the sunken ship USS Arizona has been used as a memorial mausoleum.
