But presently, domestic power coal fleet tonnage is rather small and a ship age tends to be too old. What is more, many old-age Dry bulk ships have extended services.

而我国煤炭运输船舶普遍吨位较小，船龄偏大，成本偏高，许多老龄船已超期服役。

youdao

China's shipping industry has lobbied against such ships, fearing they may strengthen Vale's dominance on the dry-bulk market and China's Ministry of Transport has restricted their access to its ports.

WSJ: Global Shipping Faces More Choppy Waters