The increasing specialisation of ships and the increases in their size provide the means of carrying cargoes across the sea at minimum cost.
Ukunyusa ezobuchule ezinqanaweni nokunyuka komlinganiselo wazo kunika iindlela zokuthwala imithwalo ngokunqamlezileyo okanye ngokunqumla elwandle ngaxahiso elifikelelekayo.