Craig Shipbuilding was a shipbuilding company in Long Beach, California. To support the World War I demand for ships Craig Shipbuilding shipyard switched over to military construction and built: US Navy Submarines and Cargo Ships. Craig Shipbuilding was started in 1906 by John F. Craig. John F. Craig had worked in Toledo, Ohio with his father, John Craig (1838-1934), and Blythe Craig, both shipbuilders, their first ship was built in 1864 at Craig Shipbuilding Toledo. John F. Craig opened his shipbuilding company in Port of Long Beach on the south side of Channel 3, the current location of Pier 41 in the inner harbor, becoming the port's first shipyard. In 1908 Craig Shipbuilding was given the contract to finishing dredging of the Port of Long Beach inner harbor and to dredge the channel connecting it to the Pacific Ocean. In 1917 Craig sold the shipyard to the short-lived California Shipbuilding Company. but then opened a new shipyard next to the one he just sold and called it the Long Beach Shipbuilding Company. The Long Beach Shipbuilding Company built cargo ships in 1918, 1919, and 1920 for the United States Shipping Board.

The Consolidated Steel Corporation was an American steel and shipbuilding business. Formed on 18 December 1928, the company built ships during World War II in two main locations: Wilmington, California and Orange, Texas. It was created by the merger of Llewellyn Iron Works, Baker Iron Works and Union Iron Works, all of Los Angeles. The company entered the shipbuilding business in 1939. In 1948, now a pioneer producer of large-diameter pipelines, Consolidated Steel was renamed Consolidated Western Steel and acquired by U.S. Steel and operated as a wholly-owned subsidiary.