Port of OsakaThe Port of Osaka is the main port in Japan, located in Osaka within Osaka Bay. The Port of Osaka also has several sister ports including the Port of Busan.Harbor Statistics Cargo Handling Volume * Foreign trade: 34.11 million tons* Domestic trade: 48.09 million tons Mooring facility * Oceangoing: 70 berths* Coastal 111 berths Area * Harbor area: 4,684 hectares* Landfill area: 1,860 hectares.