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Dredging is used to address a broad range of maritime infrastructure needs – with economic, social, and environmental implications. Dredging deepens ports and access channels to accommodate global waterborne freight transport of goods.
Dredging establishment requires thorough planning and designing, which involve engineers, scientists, and highly trained crews representing a wide range of skills. This process helps to deepen waterways to allow easy passage of ships. The underwater excavation process is an essential part of waterway construction projects, such as docks, bridges, and underwater tunnels.
It is a routine necessity in waterways around the world because sedimentation is the natural process of sand and silt washing downstream that gradually fills channels and harbors. It keeps waterways and ports navigable, and assists coastal protection, land reclamation, and coastal redevelopment, by gathering up bottom sediments and transporting them elsewhere.
It helps in removing contaminants from the waterways and recreating damaged areas by reclamation work and makes fishing easier even in shallow creeks.
Regular maintenance dredging is of huge importance in coastal regions which have large tidal activity and also in water bodies that are susceptible to becoming silted with sediments, sand, and mud. For dredging, equipment called dredgers is used to remove the deposited sediments from an inlet creek, waterway, or ocean floor.