为进一步掌握自航耙吸挖泥船在长江口北槽区域的疏浚效率、挖泥能力、燃料消耗等情况，为长江口深水航道治理一期疏浚工程合理安排施工力量、进行成本核算提供依据， 1999年 6月对即将投入一期疏浚工程的“航浚 4007”轮与“航浚 6002”轮进行施工现场测定。现对测定项目、测定结果、成果分析和结论作了全面介绍。 In order to further understand the dredging efficiency, dredging capacity and fuel consumption of the self-propelled suction hopper dredger in the north channel area of ​​the Changjiang Estuary, provide the basis for reasonable cost management for the first-stage dredging project of the Yangtze Estuary Deepwater Channel Regulation Phase I, In June 1999, the “Hangjun 4007” wheel and “Hangjun 6002” wheel, which will be put into the first-stage dredging project, were measured at the construction site. Now the measurement project, measurement results, results analysis and conclusions made a comprehensive introduction.