As still higher speeds are demanded for cargo ships it must be borne in mind that a limit is set not only by the resultant increases in the building and operating costs of the ship, but also by technical and physical factors.
Nangona izantya eziphezulu zifuneka kwinqanawa zokuthutha imithwalo mayihlale ezingqondweni into yokuba umlinganiselo ubekiwe hayi ngeziphumo zokunyuka okanye zokwanda kwizakhiwo kwakunye namaxabiso akhoyo eenqanawa, kodwa nangobugcisa kwakunye wembonakalo yeemeko.