This has a favourable effect on the propulsion power required, but does require sufficient cargo to fill the larger ship to be available at all times.
Le nto inemiphumela elungileyo kumandla okuqhutyelwa phambili afunekayo, kodwa ayifuni mthwalo waneleyo ongcwalisa inqanawa enkulu usoloko ukhona ngamaxesha onke.