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Even as this impressive armada returned to Hampton Roads, Virginia, in February 1909, its battleships were being surpassed by increasingly larger and heavier dreadnoughts packing ever more firepower. In 1916 alone, the United States Navy commissioned four newcomers: Nevada (BB-36) and Oklahoma (BB-37), measuring 583 feet in length and carrying ten fourteen-inch guns in two triple and two twin turrets, and Pennsylvania (BB-38) and Arizona (BB-39), 608 feet in length and mounting twelve fourteen-inch guns in four turrets of three each. Ships are usually built in classes of comparable specifications named after the lead ship, even if there are only two ships in the class. Hence, the Arizona was a Pennsylvania-class battleship. While there were small differences among the classes, pre–World War II battleships, beginning with Nevada, were “standard-type,” with generally the same top speed (21 knots), turning radius (700 yards), and armor, to facilitate steaming together. Arizona’s commissioning—its official acceptance into active service—occurred in the Brooklyn Navy Yard on October 17, 1916. Europe had been at war for two years, and it looked as if the United States would soon enter the conflict. The new ship and its sister, Pennsylvania, were, the New York Times reported, the “most powerful fighting craft afloat.” From keel laying to commissioning, Arizona’s construction had taken two and one-half years and cost $16 million (comparable to $369,000,000 in 2017 purchasing power). An initial complement of 1,034 officers and men took up their stations onboard.
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Walter R. Borneman (Brothers Down: Pearl Harbor and the Fate of the Many Brothers Aboard the USS Arizona)