 the Tokyo Bay ports of Tokyo, Kawasaki and Yokohama (Keihin ports) and the Osaka Bay ports of Osaka and Kobe (Hanshin ports).The Port of Shimizu has a water depth of about 12 meters; its attractiveness has been enhanced over the past years by the construction of new road and rail links which contribute to expanding its commercial hinterland.In tonnage, imports (about 6.5 million tons) are close to twice export volumes, but in trade value exports are twice as valuable as imports.