Abstract
This study discusses reduction of physical distribution cost and CO₂ emissions on transportation of iron ore. And the authors conduct the sensitivity analysis of the effect which the size of a vessel, the number of unloading ports, voyage distance, and quantity demanded have on physical distribution cost and CO₂ emissions. The following was found as a result of the authors studying. Physical distribution cost and CO₂ emissions are greatly reduced as the size of a vessel becomes large. Especially, enlargement of a vessel is so effective when voyage distance is long. Therefore, the result of this study should be considered for the vessels that voyage between Japan and Australia or Brazil. Moreover, it turned out that the suitable number of unloading ports changes with sizes of a vessel. 300,000DWT is desirable when the number of unloading ports is two.
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