![]() Iowa 's main armor belt was 186 feet (56.7 m) long and 7 feet 6 inches (2.3 m) wide, with transverse bulkheads 12 inches (300 mm) thick and reinforced by coal bunkers 10 feet (3.0 m) thick. Like Indiana, Iowa was made using "Harveyized steel".īoth decks of Iowa were above sea-level, permitting a dryer, sturdier ride than previous vessels, with less gun maintenance. There was extensive testing of new armor plating at one point, Iowa was fired on in testing to assess the strength of the steel shell. ![]() Iowa was based on the earlier Indiana-class and carried a similar armament layout she was armed with four 12-inch (305 mm) guns in twin turrets fore and aft, supplemented by eight 8-inch (203 mm) in four twin turrets and two above-board 14-inch ( mm) torpedo tubes. ![]() She represented an upgrade from the Indianas Iowa 's keel was built by William Cramp and Sons of Philadelphia, Pennsylvania on 5 August 1893,who also built the coal-burning, 11,000 indicated horsepower (8,200 kW) vertical triple expansion reciprocating engines.She carried 1,795 short tons (1,628 t) of coal. Iowa had a unique design and did not belong to a specific ship class. The preceding Indiana class, authorized by Congress as "coast-defense battleships", had many problems with endurance and speed.Ī line drawing of the Iowa (BB-04) as completed. On 19 July 1892, the Congress of the United States authorized a 9,000 long tons (9,100 t) warship specifically, it was for a "seagoing coastline battleship" to fulfill the Navy's desire for a ship that could operate effectively in open waters. There was great interest in new shipbuilding techniques and a search for stronger metal alloys, and discussion of new designs, centerboards, ventilating techniques, with active participation between private builders and naval designers. Wood-built sailing ships with cannons were replaced by steam-powered warships armored with steel. The second half of the 19th century saw radical changes in shipbuilding design. ![]() While she was an improvement over the Indiana class because of a superior design, the warship became obsolete quickly in the first quarter of the 20th century, and was used for target practice and sunk on 23 March 1923 in Panama Bay by a salvo of 14-inch shells. Iowa saw substantial action in the Spanish–American War. 4) was the first ship commissioned in honor of Iowa and is notable for being America's first seagoing battleship. ![]()
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