Location of the Port Industries in the Port of Yokohama have been studied. Information acquired are classified into following 9 categories and filed as a complete list. Then the locations are plotted on the corresponding 9 sheets of maps according to the abovementioned list.
　Group A; The group of shipping companies (overseas and domestic).
　Group B; The group of maritime services, ship suppliers, etc.
　Group C; The group of harbour transport companies.
　Group D; The group of warehouse companies.
　Group E; The group of business incidental to cargo handling for example cargo watching, marine surveyor, etc.
　Group F; The group of marine contractors.
　Remaining three inclde governmental organizations, port touragencies, etc.