With the rapid development of fuzzy control technology and artificial intelligence technology,the development of trailing suction hopper dredger tends to be smart,efficient,energy-saving and cost-reducing.Based on the new trailing suction hopper dredger under ECO mode,we study the dredging performance of trailing suction hopper dredger under ECO and MANUAL modes on the intelligent systems of TSC,EPC and AVC,and compare the data of loading time,production,fuel consumption and other indicators under the two modes through sea trials.The results show that in the ECO mode,the labor cost reduces,and the production stability of the trailing suction hopper dredger significantly improves,the efficiency increases 10% and the fuel consumption reduces 6%.