Sixteen airplanes each carrying four 500-lb bombs.
That could be carried by a single B-29.
Except that B-29s weren't available in 1942, and couldn't fly off a carrier anyway.
“Except that B-29s weren’t available in 1942, and couldn’t fly off a carrier anyway.”
But we’re not talking about 1942. The a-bomb wasn’t available then anyway. If there was no way to deliver nukes from aircraft carriers, okay. Then we would have had to island-hop after a loss at Midway, and whatever lag in time that required would V-J Day be pushed back.