Na-agụsị akwụkwọ nke ngalaba pụrụ ịrụ ọrụ dị ka stevedores na dispatchers (akara ọrụ nche), mmepụta injinia (Technologists) na oru nke bu ibu ụgbọ njem owuwu ndị dị na oké osimiri na ọdụ ụgbọ mmiri, ha nwere ike isi na Departments na Services of (dịrị) mbupu, Agents, Brokers, Crewing na Surveyor Companies.
