By war 's end in 1945, the United States Navy had added nearly 1,200 major combatant ships, including twenty - seven aircraft carriers and eight "fast '' battleships, and ten prewar "old '' battleships totaling over 70 % of the world 's total numbers and total tonnage of naval vessels of 1,000 tons or greater.
how many aircraft carriers did the united states build during world war ii
twenty - seven