Explores the history of humanity's interaction with the sea, from the first efforts of ancient man to make water craft to the high-tech submarines of the modern age. Examines the way the oceans have been center stages for much of human history in trade and in warfare, as well as the wealth of biological information humanity has gleaned from the life in the ocean.
Describes how the National Steel and Shipbuilding Company, located in San Diego, California, builds a ship step-by-step from the planning stage to the testing stage and the turning over of the vessel to the owner.