The Japanese attack lasted little more than two hours. When the last plane winged away at 10 A.M., eighteen U.S. vessels, including eight battleships, had been sunk or heavily damaged. More than 175 military aircraft were destroyed on the ground and another 159 crippled. In all, 2,403 servicemen were dead, 1,103 of them entombed on the battleship Arizona, which sank almost instantly when a bomb exploded in its forward magazine. Another 1,200 men were wounded. Japan lost twenty-nine planes, mostly dive-bombers, in the second attack wave.