Complex sentence: The attack on Pearl Harbor brought up an urgent need for aircraft carriers, so some T3 tankers were converted to Escort carrier, the USS Suwannee is example of how a T3 tanker hull AO-33 was rebuilt to be an Escort carrier.
Split into simpler sentences: The attack on Pearl Harbor brought up an urgent need for aircraft carriers. The USS Suwannee is an example of how a T3 tanker hull AO-33 was rebuilt to be an Escort carrier.