经济航速与燃油的节省。
中远集团的船舶在运营中采取经济航速航行，节约燃油，减少了碳排放；
Vessels of COSCO Group all run at the economical speed to save oils and reduce carbon emissions.
最后从轮机管理的角度出发，分析选择最佳经济航速运行时，存在的技术问题及相应的对策。
Finally, we then from the engine management point of view, analyze the technical issues and solutions in selecting an optimal ship operational speed.
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