While the shipbuilding industry would find it relatively easy to build ships with ever increasing draughts, the port and harbour and pilotage authorities worldwide are not in a position to make constant increases in the depths of water in the navigable channels.
Ngexa ushishino lolwakhiwo lweenqanawa lizakufumanisa kulula kakhulu ukwakha iinqanawa nokunyuka komsinga womoya, unxweme kwakunye nezibuko kwakunye nemithetho yabaqhubi beenqanawa kuzwelonke azikho kwimeko yokwenza unyuso olungatshintshiyo kubunzulu bamanzi kwiindlela nokuhambeka ngeenqanawa.