Admiral Nimitz remarks after touring devastation of attack.
Mistake number one: the Japanese attacked on Sunday morning. Nine out of every ten crewmen of those ships were ashore on leave. If those same ships had been lured to sea and been sunk--we would have lost 38,000 men instead of 3,800.
Mistake number two: when the Japanese saw all those battleships lined in a row, they got so carried away sinking those battleships, they never once bombed our dry docks opposite those ships. If they had destroyed our dry docks, we would have had to tow everyone of those ships to America to be repaired. As it is now, the ships are in shallow water and can be raised. One tug can pull them over to the dry docks, and we can have them repaired and at sea by the time we could have towed them to America. And I already have crews ashore anxious to man those ships.
Mistake number three: every drop of fuel in the Pacific theater of war is in top of the ground storage tanks five miles away over that hill. One attack plane could have strafed those tanks and destroyed our fuel supply. That's why I say the Japanese made three of the biggest mistakes an attack force could make or God was taking care of America.
From book Reflections on Pearl Harbor