A blueprint map of the shipyard for Oregon Shipbuilding Corporation. The Oregon Shipbuilding Corporation was a shipyard managed by Kaiser Shipbuilding Corporation during World War II. The shipyard built Liberty and Victory ships for the U. S. Maritime Commission between 1941 and 1944. The plans are dated Dec. 14, 1944 with revisions noted March 14, 1945. The document is a blueline print mounted on cloth.
An employee using an electric swing frame grinder to clean skeg off a ship frame casting at Columbia Steel Casting Company. The caption at the bottom of the image reads, “Skeg being cleaned.”
An employee uses a prybar to remove the slag after an acetylene cutting torch has cut the riser steel-cast component at Columbia Steel Casting Company.
An unidentified employee Employee removes solidification gusset with an acetylene cutting torch from a ship hull casting at Columbia Steel Casting Company.
Unidentified molders at Columbia Steel Casting Company work under the cope of a mold. Molders use core nails to secure chills, the mold parting compound is visible (white at edge of mold cavity).
Two employees work on cleaning a casting at Columbia Steel Casting Company. One employee uses a cutting torch to remove rigging, and another uses a bar to hand chip off sand.
A view of the stern subassemblies for a Liberty Ship showing how the stern frames produced by Columbia Steel Casting Company were welded to the ship’s hull plates.