A nation long dependent on distant shores for its energy and food is now turning its gaze inward — or rather, back to the sea. Japan, once the world's foremost shipbuilder, is marshaling a trillion-yen alliance between government and industry to reclaim that capacity by 2035, driven not by commercial ambition alone but by the deeper recognition that a country unable to move its own goods is a country at the mercy of forces beyond its control. In an era of fractured supply chains and geopolitical uncertainty, Tokyo is reframing steel and saltwater as matters of national survival.