Once the ship has been specialised for the carriage of a given type of cargo the only way of obtaining further appreciable reductions in the transport cost is by making use of the drop in unit cost that arises from increasing ship size, to which reference has been made,
Xa inqanawa iyeyona iyincutshe ekuthwaleni uhlobo oluthile lomthwalo eyona ndlela yokufumana ukunciphisa okwamkelekileyo kwixabiso lezothutho kukusebenzisa ukuhla kwexabiso lento enye elisuka ekunyukeni komlinganiselo wenqanawa, apho igunya liye lenziwa.