From a site I like.
"With over a dozen major detonations from 1,000 and 500 lb bombs and numerous missile, fuel tank, and aircraft explosions no ship has ever survived the pounding FORRESTAL underwent that day, before or since."
"FORRESTAL would spend seven months in the yards being repaired, she was re-built from the hanger up and forward to aircraft elevator number four, this accounts for about 1/5 the ships length and 5 decks. On April 8, 1968 FORRESTAL was once again ready to take her place in the fleet..."
With so much carnage leading to 7 months in the yard how much more ordnance would have to go off to sink her?