The USS Arizona Memorial, dedicated in 1962, straddles the remains of the battleship sunk during the surprise Japanese air attack, Dec. 7, 1941. The memorial pays tribute to the nearly 1,200 sailors and Marines who died aboard the Pennsylvania-class super-dreadnaught during the attack as well as all of the 2,403 military and civilian personnel who perished that Sunday morning. A bomb detonated in her powder magazine caused a violent explosion and immediately sank the craft, Navy hull number BB-39.The more than one million visitors a year to the memorial can see the diesel fuel leaking from the submerged wreck to this day.