This paper briefly introduces the history,current situation and future development of dredging equipment both at home and abroad.

Through the analysis of data and literatures on foreign cutter-suction dredgers,drag-suction dredgers and dredging techniques and based on the actual experience on foreign dredgers hired in dredging of waterways for Tianjin Port,the paper makes a comparative analysis of the technical researches and application on domestic and foreign dredging equipment.

The article highlightes the development and achievements in ship type and dredging equipment of large size SHDs abroad in the recent 10 years.

This paper introduces the application of measuring data of measurement ship from aspects of data generation of waterway section,waterway dredging design and coastline detection.

Effect of dredging engineering on water environmental capacity of Lake Dongting;

Influence of sediment dredging on the ecotoxic effect of lake sediments;

Dredging and After-treatment of Deposits Contaminated by Minerals;

A simple talk on project of Changnian shipping that An to Mao course qixingdui beach dredge and construct;

The control project of MouShan Lake is introduced,including water supplying,flood control and ecology environment,and some relevant issues such as lake dredge,ecology repairing and water quality monitoring,etc.

Taking the home-made "1750m 3/h Cutter Suction Dredger" as the basis model dredge simulator, the cutter suction dredge simulator, which has an operating console similar to that in the operation cab of the basis dredger, is designed and manufactured.