Vessel is the best conveyance on the aspect of saving energy, but decreases theenergy expends of vessel is very important as the water transportation possesses agood-sized proportion in world trade.

• 所有的运输工具中船舶是最节约能源的,但由于水上运输在世界贸易中占有相当大的比重,减小船舶的能源消耗也是非常重要的。