Ocean transport system involving use of centralized ports to assemble and disseminate cargo to and from ports within a geographic area. Commodities are transported between major ports, then transferred to feeder vessels for further transport to a number of additional ports.
a transportation system where a number of trains "feed" cargo to an intermediate station, and another set of trains take the cargo from that station to its destination
Cargo to/from regional ports are transferred to/from a central hub port for a long-haul ocean voyage.
Coastal movements of loaded/empty containers on board smaller container vessels which coordinate with a "mother ship" for the ocean voyage.