Twisted suction sand dredgers are widely used and can operate in rivers, lakes, and seas for dredging, sailing, channel excavation, and land reclamation. Due to its low cost, high output, and simple operation, sand pumping boats are widely recognized by consumers. Therefore, in special circumstances, high-power cutter equipment can be installed on the cutter suction sand dredger, and the cutter suction sand dredger can be customized to excavate rock formations such as basalt and limestone for construction. The cutter suction sand dredger installed with positioning piles has good maneuverability.