What Made the Japanese Attack on Pearl Harbor So Devastating?-- Part 2

Torpedo planes coordinated their assault with aircraft carrying Type 99 anti-ship bombs, which were converted artillery shells.  When dropped from an attitude, the streamlined projectiles could pierce  steel armor, penetrate through a ship's decks, and explode.

One such bomb caused the  massive fatal explosion on the USS Arizona, killing 1,177 servicemen in seconds.

To strike targets further inland,  dive bombers carried the Type 98 general-purpose bomb, wreaking havoc on airfields, structures, vehicles and parked aircraft.

--GreGen