While the deadweights of tankers and bulk carriers have for the most part been increased by increasing the draught, as container ships increase in size their depth to draught ratio rises considerably.
Ngelixesha ubunzima obufileyo bezithuthi zepetroli kunye neziphatha okunzima ziye ngenxa zanyuka ngenxa yokunyusa imisinga yomoya ngenxa yokuba iinqanawa zezikhongozeli ziye zonyuka kubungakanani bobunzulu, ze imisinga yomoya ngokomlinganiso yanyuka.