Man from Frisco (1944)

Matt Braddock (a fictional version of real-life Henry Kaiser) is an engineer with revolutionary ideas for shipbuilding. When he tries to set up yards for prefabricating ships on the West Coast, he runs up against a rival builder, Joel Kennedy. Kennedy's son Russ idolizes Matt, but Russ's sister Diana thinks Matt is a hopeless idealist who could ruin her father.