At present, with the increasing tonnageofship and more and more ships propelled by electric power, the capacity of a generator in a Marine power station is getting larger and larger.
目前，由于船舶吨位的不断增加以及柴油机—电力推进船舶的不断涌现，使船舶电站发电机的容量越来越大。
2
The ship has a tonnageof twenty thousand.
这艘船的吨位是2万吨。
《新英汉大辞典》
3
With the increase of the tonnage and power of ocean-going ship, more and more attentions are paid to the match among vessel, main engine and propeller by shipping and shipbuilding world.