Submersible Dredge Submersible dredge, also called submersible slurry pump dredger, is designed and manufactured with optimized hydrodynamics technology for sand dredging and silt clearing. SLAPK brand ZJQ series submersible dredge is equipped with our own specially designed submersible dredger pump, advanced high efficiency suction reamer head and the famous brand motor. All of them are …