The Port of Yokohama (横浜港 Yokohama-kō?) is operated by the Port and Harbor Bureau of the City of Yokohama in Japan. is the capital of Kanagawa Prefecture, located in the Kantō region of the main island of Honshū and is a major commercial hub of the Greater Tokyo Area For a topic outline on this subject see List of basic Japan topics. It opens onto Tokyo Bay. is a bay in the southern Kantō region of Japan. Its old name was. The port is located at a latitude of 35. 19. –29°N and a longitude of 139. 37–45°E. To the south lies the Port of Yokosuka; to the north, the ports of Kawasaki and Tokyo. The lies to the south of the Port of Yokohama on Tokyo Bay. Under the Ports and Harbors Law of Japan it is classified as an Important Port is a city located in Kanagawa, Japan, between Tokyo and Yokohama. officially, is one of the 47 prefectures of Japan and located on the eastern side of the main island Honshū.
Yokohama Port has ten major piers. Honmoku Pier is the port's core facility with 24 berths.  Osanbashi Pier handles passenger traffic including cruises, and has customs, immigration and quarantine facilities for international travel. "Yokohama Pier" redirects here For other piers in Yokohama see Piers of Yokohama. . Detamachi, the "banana pier," is outfitted for receiving fresh fruits and vegetables.  Daikoku Pier, on an artificial island measuring 321 hectares, houses a million square meters of warehouse space.  Seven berths of Mizuho Pier are used by the United States Forces Japan. The United States Forces Japan ( USFJ, 在日米軍) refers to the various divisions of the United States Armed Forces that are stationed in Japan.  Additional piers handle timber and serve other functions.
The Treaty of Amity and Commerce of 1858 specified Kanagawa as an open port. The between the United States and Japan was signed at the Ryōsen-ji in Shimoda on July 29, 1858. The Port of Yokohama opened the following year. The port was devastated by the Great Kantō Earthquake of 1923. The struck the Kantō plain on the Japanese main island of Honshū at 1158 on the morning of September 1, 1923.