Whirley Crane at the Kaiser Shipyard #3.
The Richmond Shipyard #3 was one of four shipyards in Richmond, but the only one designed to be permanent. Toegether, the four shipyards produced 747 ships during World War II, which was more than any other yard in the country. The Shipyard used “Whirley” cranes to move prefabricated ship components into place. The Whirley Crane got its name due to the crane's ability to turn a full 360 degrees, which allowed the boom to achieve efficient speed.