 Other war industries also competed for labor, and many of the cities and towns that hosted shipyards also had other labor-intensive wartime industries, such as aircraft plants.In many cases, the wages were close to what could be earned at a shipyard for work that was not as physically taxing, so a slow but steady movement of labor from one defense industry to another was made, and often shipbuilding lost more labor than it gained.By the second half of 1942, the yards contracted in the first waves of expansion were fully built and those yards had completed three or more ships per building way.