One of the more important innovations of World War II was the Liberty Ship. Based on a British design the Liberty Ships were mass produced on an epic scale during World War II, eighteen ship yards turning out an astonishing 2710 of the cargo haulers. The ships were made up of sections that were welded together. They could be built in as little as five days. President Roosevelt launched the first one, the SS Patrick Henry, on September 27, 1941. The Henry made 12 wartime voyages and had a postwar career that ended in 1958 with it being sold for scrap. The ships were slow and ugly, but no they played an immense part in bringing about Allied victory.