On the other hand research work that is aimed at enabling higher speeds to be achieved by a reduction in the ship resistance and an increase in the efficiency of the propulsion plant fills a genuine social need.
Ngenye indlela uphengululo zincwadi elineenjongo zokunceda ukuba izantya eziphezulu zenzeke ngokunciphisa ukuxhathisa kwinqanawa kwakunye nokunyuka kobuchule kwinkqubela phambili yesityalo zinika intswelo yokuhlala ndawonye yenene.