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Armament of the Iowa-class battleship
The armament of the s underwent a massive development since the first ''Iowa''-class ship was laid down in June 1940. Owing to the continual development of the weaponry aboard these battleships they remain the most heavily armed gunships the United States has ever put to sea.
In their World War II configuration, each of the ''Iowa''-class battleships had a main battery of guns that could hit targets nearly 20 statute miles (32 km) away with a variety of artillery shells designed for anti-ship or bombardment work. The secondary battery of guns could hit targets nearly 9 statute miles (14 km) away with solid projectiles or proximity fuzed shells, and were equally adept in an anti-aircraft role and for damaging smaller ships. Each of the four battleships carried a wide array of 20 mm and 40 mm anti-aircraft guns for defense against enemy aircraft.
When reactivated and modernized in the 1980s each battleship retained the original battery of nine guns, but the secondary battery on each battleship was reduced from ten twin-gun mounts and twenty guns to six twin-gun mounts with 12 guns to allow for the installation of two platforms for the Tomahawk missiles. Each battleship also received four Harpoon missile magazines, Phalanx anti-aircraft/anti-missile Gatling gun systems, and electronic warfare suites.
==Main battery==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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