Photo 7: View in hangar, looking forward and to port. The bomb detonated on or about the main deck level demolishing the battery shop and blowing a hole in the 20-lb. main deck plating. Note fragment damage to the ammunition hoist. 
Photo 8: Close-up of the hole blown in the main deck. It was about 8 feet diameter. The wrecked battery shop is in the background
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<a rel="nofollow" class="external text" href="https://catalog.archives.gov/id/134078973">BUSHIPS War Damage Report №11</a> - USS CURTISS (AV-4) Bomb Damage, 7 december 1941, Pearl Harbor