Transportation of 1,000 cargo units from the closer port to the hub
port using feeder vessel will cost 525,000; from the extreme port to
hub port - 550 000 (see operational costs). To collect all cargo at
the hub and to distribute it to the corresponding hub will cost 2*2*(2*525+2*550))=
8,600,000. The ocean vessel voyage from hub to hub with full load will
cost 15,500,000 (see operational costs). Thus, the total transportation
costs are 24,100,000.