 The use of welding allowed ships to be built in modular sections eliminating the time-consuming and highly skilled shipfitting of individual hull pieces to be riveted in place on the building ways.Prefabrication allowed a much more streamlined approach to the building of a ship more akin to modern manufacturing assembly processes where a worker would be tasked with doing one small task in the many thousands of tasks required to assemble a ship.With volume production, that worker could be employed doing that same task repetitively, which would ultimately lead to high productivity due to a worker becoming a master of his assigned task very quickly.