Trailing suction hoper dreger is self -propelled and non -self propelled . the dredging pump drives of front of the screw rake head to chrn . cut and collect to the underwater suction position, and through the suction pipe to absorb the bottom silt, sand and the other loose material with water .and then through to discharge pipe driven by the dredging pump to discharge the slurry to the destination, during dredger working process . in order to increase the mud suction effert . we add the jet in the front of the suction pipu top to increase to the mud concentration . this type of dredger is only suitable for underwater sandy and non-viscous soil , as well as soft and esaily flowing mud.

Advantage
1.Widely operation area. 
2.Earily operation. 
3.Less wastage.
4.High efficient.