Dredging

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).

Uses

  • Capital: dredging carried out to create a new harbor, berth or waterway, or to deepen existing facilities in order to allow larger ships access. Because capital works usually involve hard material or high-volume works, the work is usually done using a cutter suction dredge or large trailing suction hopper dredge; but for rock works, drilling and blasting along with mechanical excavation may be used.
  • Preparatory: work and excavation for future bridges, piers or docks/wharves, often connected with foundation work.
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    Latest News for: dredger

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    World's Largest Electric Dredger Begins Pilot Operation to Clear Silt in Beijing (Beijing Municipal Government)

    Public Technologies 23 Apr 2025
    Named Junlan, the dredger boasts 600 kilowatts of driving power and has a maximum digging depth of 25 meters ... tool" for silt removal, with an efficiency three times of previous dredger models.
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    World's largest electric dredger begins pilot operation to clear silt in Beijing

    China Daily 22 Apr 2025
    Named Junlan, the dredger boasts 600 kilowatts of driving power and has a maximum digging depth of 25 meters ... a "sharp tool" for silt removal, with an efficiency three times of previous dredger models.
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    Death toll from dredger capsizing rises to nine

    Tradewinds 21 Apr 2025
    More bodies have been recovered following the ...
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    Photos: Death Toll From Chinese Dredger Capsizing Rises to Nine

    The Maritime Executive 20 Apr 2025
    The death toll from the capsizing of the dredger Hong Hai 16 has risen to nine people, with two more still missing, according to the Philippine Coast Guard ... At about 0520 hours, the vessel capsized for reasons still under investigation ... Courtesy PCG.
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    Dredger sinks while moored off Tuas in Singapore

    SAFETY4SEA 16 Apr 2025
    A Belize-registered dredger, KSE Hitachi, sank while moored off Tuas on the afternoon of 14 April, according to the Maritime and Port Authority of Singapore (MPA) ... The dredger’s operating company ...
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    Belize-Registered Dredger Sinks Off Tuas; No Personnel Onboard

    Hellenic Shipping News Worldwide 15 Apr 2025
    ... a moored Belize registered dredger, KSE Hitachi, had sunk off Tuas.
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    Moored dredger sinks off Tuas; MPA investigating

    Straits Times 14 Apr 2025
    No personnel were reported to be on board at the time of the incident ....
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    Moored Dredger Sinks off Singapore, No Casualties Reported

    MarineLink 14 Apr 2025
    The dredger’s company is making arrangements to salvage the vessel.
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    Belize-Registered Dredger Sinks Off Tuas; No Personnel Onboard (Ministry of Transport of the Republic of Singapore)

    Public Technologies 14 Apr 2025
    The Maritime and Port Authority of Singapore (MPA) was alerted at about 1.30pm on 14 April 2025 that a moored Belize registered dredger, KSE Hitachi, had sunk off Tuas.
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    Steel Cut for USACE Eco Dredger

    MarineLink 07 Apr 2025
    Army Corps of Engineers' (USACE) new medium class hopper dredger with a ceremonial steel-cutting event ... Unique to this hopper dredger is the use of a semi-autonomous Dredge Assist program that requires minimal human interaction to complete tasks.
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    USACE Breaks 45-Year Hiatus with Cutting-Edge Hopper Dredge Construction at Eastern Shipbuilding

    gCaptain 07 Apr 2025
    Eastern Shipbuilding Group (ESG) has launched construction on a groundbreaking medium class hopper dredge for the U.S. Army Corps of Engineers (USACE), marking the agency’s first deep draft hopper dredge build in nearly half a century ... ....
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