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USS ''Utah'' (BB-31/AG-16) was the second and final member of the of dreadnought battleships. The only ship of the United States Navy named after the state of Utah, she had one sister ship, . ''Utah'' was built by the New York Shipbuilding Corporation, laid down in March 1909 and launched in December of that year. She was completed in August 1911, and boasted a main battery of ten guns in five twin gun turrets. ''Utah'' and ''Florida'' were the first ships to arrive during the United States occupation of Veracruz in 1914 during the Mexican Revolution. The two battleships sent ashore a landing party that began the occupation of the city. After the American entrance into World War I, ''Utah'' was stationed in Bantry Bay, Ireland, where she protected convoys from potential German surface raiders. Throughout the 1920s, the ship conducted numerous training cruises and fleet maneuvers, and carried dignitaries on tours of South America twice, in 1924 and 1928. In 1931, ''Utah'' was demilitarized and converted into a target ship and re-designated as AG-16, in accordance with the terms of the London Naval Treaty signed the previous year. She was also equipped with numerous anti-aircraft guns of different types to train gunners for the fleet. She served in these two roles for the rest of the decade, and late 1941 found the ship in Pearl Harbor. She was in port on the morning of 7 December, and in the first minutes of the Japanese attack on Pearl Harbor, was hit by two torpedoes, which caused serious flooding. ''Utah'' quickly rolled over and sank; the vast majority of her crew were able to escape, but 64 men were killed in the attack. The wreck remains in the harbor, and in 1972, a memorial was erected near the ship. ==Design== (詳細はlong overall and had a beam of and a draft of . She displaced as designed and up to at full combat load. The ship was powered by four-shaft Parsons steam turbines rated at and twelve coal-fired Babcock & Wilcox boilers, generating a top speed of . The ship had a cruising range of at a speed of . She had a crew of 1001 officers and men. The ship was armed with a main battery of ten 12 inch /45 Mark 5 guns in five twin gun turrets on the centerline, two of which were placed in a superfiring pair forward. The other three turrets were placed aft of the superstructure. The secondary battery consisted of sixteen 5-inch /51 guns mounted in casemates along the side of the hull. As was standard for capital ships of the period, she carried a pair of torpedo tubes, submerged in her hull on the broadside. The main armored belt was thick, while the armored deck was thick. The gun turrets had thick faces and the conning tower had thick sides. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「USS Utah (BB-31)」の詳細全文を読む スポンサード リンク
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