It involves excavating either naturally deposited sediments or artificial debris such as rocks, bottom sediments, construction debris, refuse, and plant or animal matter on the bottom of either shallow seawater or freshwater.

Once the hoppers are full, the process is halted for a while, and the ship travels to the water disposal site, where the unwanted sediments are released through the bottom of the ship. If the crane is mounted on a barge, the entire vessel is referred to as a dredger.Dredging removes the deposits percolated underwater to clear the water pathway for ships to pass, creates adequate space to construct important bridges, dykes and dams and weed out silt, intoxicants and pollutants from the bottom of the water. The crane could be located on the bank, or perhaps mounted on a barge. Developing this idea further, a motorized crane equipped with a drag bucket or clamshell that is used to scoop material from the bottom of a body of water is also a dredger. For example, a scoop attached to the end of a rope or pole by which a man can draw sediments up from the bottom of a pond is a dredger. A dredger is any device, machine, or vessel that is used to excavate and remove material from the bottom of a body of water.

Dredging is also used as a technique for fishing for certain species of edible clams and crabs, see fishing dredge. It is also used as a way to replenish sand on some public beaches, where sand has been lost because of coastal erosion. This technique is often used to keep waterways navigable. Dredging Dredging is an excavation activity or operation usually carried out at least partly underwater, in shallow seas or fresh water areas with the purpose of gathering up bottom sediments and disposing of them at a different location.

Dredge through meaning