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USS ''Minnesota'' (BB-22), the fifth of six pre-dreadnought battleships, was the second ship of the United States Navy in honor of the 32nd state. She was laid down at the Newport News Shipbuilding Company of Newport News, Virginia in October 1903, launched in April 1905, and commissioned into the US fleet in March 1907, just four months after the revolutionary British battleship entered service. ''Minnesota'' was armed with a main battery of four guns and a secondary battery of twenty 7 and 8 in (178 and 203 mm) guns, unlike ''Dreadnought'', which carried an all-big-gun armament that rendered ships like ''Minnesota'' obsolescent. Shortly after she entered service, ''Minnesota'' joined the Great White Fleet for its circumnavigation of the globe in 1908–09. The years from 1909 to 1912 were uneventful, but thereafter the ship began to become involved in conflicts in the Caribbean. She supported efforts to put down an insurrection in Cuba in 1912 and patrolled the coast of Mexico in 1913–14 during the Mexican Revolution. In 1916, the ship was placed in reserve, though she quickly returned to service when the United States entered World War I in April 1917. During the war, she trained naval personnel; while cruising off the eastern coast of the United States in September 1918, she struck a naval mine laid by a German U-boat. The extensive damage required lengthy repairs that kept her out of service for the rest of the war. She helped to return American soldiers from Europe in 1919 before resuming her training ship duties in 1920–21, before being decommissioned in December 1921 and broken up for scrap at the Philadelphia Navy Yard in 1924. ==Design== (詳細はlong overall and had a beam of and a draft of . She displaced as designed and up to at full load. The ship was powered by two-shaft triple-expansion steam engines rated at and twelve coal-fired Babcock & Wilcox boilers, generating a top speed of . As built, she was fitted with heavy military masts, but these were quickly replaced by lattice masts in 1909. She had a crew of 827 officers and men, though this increased to 881 and later to 896. The ship was armed with a main battery of four 12 inch /45 Mark 5 guns in two twin gun turrets on the centerline, one forward and aft. The secondary battery consisted of eight /45 guns and twelve /45 guns. The 8-inch guns were mounted in four twin turrets amidships and the 7-inch guns were placed in casemates in the hull. For close-range defense against torpedo boats, she carried twenty 3-inch /50 guns mounted in casemates along the side of the hull and twelve 3-pounder guns. She also carried four 1-pounder guns. As was standard for capital ships of the period, ''Minnesota'' carried four torpedo tubes, submerged in her hull on the broadside. ''Minnesota''s main armored belt was thick over the magazines and the machinery spaces and elsewhere. The main battery gun turrets had thick faces, and the supporting barbettes had the of armor plating. The secondary turrets had of frontal armor. 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 Minnesota (BB-22)」の詳細全文を読む スポンサード リンク
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