Dredging

（重定向自Suction dredger）

Reconstruction of the mud-drag by Leonardo da Vinci (Manuscript E, folio 75 v.) exposed at the Museo nazionale della scienza e della tecnologia

The Geopotes 14 lifting its boom on a canal in The Netherlands. (gēopotēs is Greek for

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

单词	Suction dredger
释义	Suction dredger 英语百科 Dredging （重定向自Suction dredger） Dredging is an excavation activity usually carried out underwater, in shallow seas or freshwater areas with the purpose of gathering up bottom sediments and disposing of them at a different location. This technique is often used to keep waterways navigable. It is also used as a way to replenish sand on some public beaches, where sand has been lost because of coastal erosion. Dredging is also used as a technique for fishing for certain species of edible clams and crabs (see fishing dredge).
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