Under the actual sea transport conditions that obtain at present, determined as they are by technical and economic developments, combination bulk carriers, ore-oil carriers, semi-container ships, and roll-on/roll-off ships form an alternative to a ship that is highly specialised for the carriage of one particular cargo.
Ngaphantsi kweemeko zothutho elwandle ezifamaneka ngoku, zimisiwe zinjalo ngokwemfundo yobugcisa nangophuhliso lwezoqoqosho, izithuthi sambuku ezidityanisiweyo, izithuthi ze-oyile ekrwada, iinqanawa ezingosinga sikhongozeli, kwakunye nenqwelo eziqhutywa ngqo ekuqaleni kohambo ngenqanawa ziphele ekupheleni kohambo ziyachasana nenqanawa ezinobuchule obubodwa obungaphezulu ukwenzela ukuthwala umthwalo omnye.