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A grab dredge. Dredging is the excavation of material from a water environment. 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.
Boskalis Westminster N.V. is a Dutch dredging and heavylift company that provides services relating to the construction and maintenance of maritime infrastructure internationally. [2] The company has one of the world's largest dredging fleets, a large stake in Smit International and owns Dockwise, a large heavylift shipping company. [3]
USS Regulus hard aground in 1971 due to a typhoon: after three weeks of effort, Naval salvors deemed it unsalvageable.. Marine salvage takes many forms, and may involve anything from refloating a ship that has gone aground or sunk as well as necessary work to prevent loss of the vessel, such as pumping water out of a ship—thereby keeping the ship afloat—extinguishing fires on board, to ...
Around 6 billion tons of marine sand is being dug up each year in a growing practice that a U.N. agency said is unsustainable and can wipe out local marine life irreversibly. Sand is the most ...
In addition, almost all of the shipping companies that use Melbourne's ports stated that there was no need for dredging or channel deepening in the bay or around the ports. [ citation needed ] The government announced the completion of works in November 2009, ahead of schedule and $200 million under budget.
The Mercator group of companies has diversified business interests in Coal, Oil & Gas, Commodity Transportation, and Dredging. Mercator Limited (formerly Mercator Lines Ltd.) is the parent company and was the second largest private sector shipping company in India, and it is based in Mumbai. It was amongst the highest wealth creators in the ...
To combat crumbling coastlines the Army Corps of Engineers will dredge sand from Scusset Beach and dump it at Town Neck Beach in Sandwich.
A primary reason for dredging is the creation, deepening, or widening of shipping lanes in or near harbors, especially those that service large ships. Such work, however, is often subject to governmental regulation, one element of which concerns the effects dredge plumes might have on the surrounding environment.