Indeed. You only mention the naval shipbuilding. Let's not forget the aircraft, the army equipment, &c. In the 1930's US had a formidable industrial capacity. In 1945 it had grown, very much, and was half of that of the whole World.
Yes, massive aircraft building:
Fighter aircraft built during the four years of the war?
Over 5,000 additional F-4 Wildcats.
Over 12,000 F-6 Hellcats
Over 12,000 F4U Corsair IIs
Over 12,000 additional P-40 Warhawks
Almost 10,000 additional P-39 Airacobras
Over 15,000 P-51 Mustangs
This is well over 65,000 of those types of fighter aircraft alone
Principle Bomber Aircraft?
Over 10,000 additional B-17 Flying fortresses
Over 13,000 B-24 Liberators
Almost 10,000 B-25 Mitchells
Over 5,000 B-26 Marauders
Over 3,000 B-29 super Fortresses
That's over 40,000 bombers.
Dive Bomber and Torpedo Aircraft?
Almost 6,000 SBD Dauntless
Over 7,000 SB2C Helldivers
Over 5,000 TBF Avengers
That' over 18,000 other naval aircraft
We're not including cargo aircraft here and there were tens of thousands of those...over 10,000 C-47 Skytrains alone.
But for combat aircraft, the U S produced a total of over 120,000 aircraft in four years! That is simply astounding and boggles the mind..
Of course, remember, tens of thousands of these aircraft were for allied nations...Britain, Russia, etc.