On the Job for Victory is surely one of the most heroic and majestic images of the war. It shows a bustling shipyard, where ship construction continues as far as the eye can see.
The huge task of mobilization was remarkably efficient at the U.S. Shipping Board, which was charged with transporting men and materiel across the Atlantic. A technological innovation lay at its core: the head of the Shipping Board designed a cargo ship which could be built in prefabricated sections at steel mills around the country, then transported to shipyards for rapid assembly.
The effort peaked on July 4, 1918 with the launching of 95 ships on that single day. The overall effort was so successful that a fleet just 15% the size of Britain's world-leading fleet in 1914 was about 50% by 1918.