hydraulic dredge

hydraulic dredge

[hī′drȯ·lik ′drej] (mechanical engineering) A dredge consisting of a large suction pipe which is mounted on a hull and supported and moved about by a boom, a mechanical agitator or cutter head which churns up earth in front of the pipe, and centrifugal pumps mounted on a dredge which suck up water and loose solids.