A dredger pump is a specialized pump that is used for dredging, which is the process of removing sediment and debris from a body of water. Dredger pumps are typically used in a variety of applications, including removing sand and silt from harbors and rivers, cleaning out ponds and lagoons, and reclaiming land from the sea. Dredger pumps can be used in both fresh water and salt water environments and are often mounted on barges or other vessels for use in offshore dredging operations.

There are several different types of dredger pumps, including centrifugal pumps, diaphragm pumps, and submersible pumps. Centrifugal pumps are the most common type of dredger pump and use an impeller to move water through the pump. Diaphragm pumps use a flexible diaphragm to move water, while submersible pumps are designed to be submerged in water and use a motor to drive the pumping action. The type of pump that is best suited for a particular dredging application will depend on the specific needs and requirements of the job.