Dredges have been classified as suction or mechanical. In all but a few situations the excavation is undertaken by a specialist floating plant, known as a dredger.ĭredging is carried out in many different locations and for many different purposes, but the main objectives are usually to recover material of value or use, or to create a greater depth of water. Possible reasons for dredging include improving existing water features reshaping land and water features to alter drainage, navigability, and commercial use constructing dams, dikes, and other controls for streams and shorelines and recovering valuable mineral deposits or marine life having commercial value. If the crane is mounted on a barge, the entire vessel is referred to as a dredger.Wikipedia Rate this definition: 0.0 / 0 votesĭredging is the excavation of material from a water environment. 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.
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