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  2. Airlift (dredging device) - Wikipedia

    en.wikipedia.org/wiki/Airlift_(dredging_device)

    Airlift dredging. An airlift is device based on a pipe, used in nautical archaeology to suck small objects, sand and mud from the sea bed and to transport the resulting debris upwards and away from its source. It is a type of suction dredge. A water dredge or water eductor may be used for the same purpose. [1]

  3. USAV Essayons (1982 ship) - Wikipedia

    en.wikipedia.org/wiki/USAV_Essayons_(1982_ship)

    These power the dredge pumps and bow thruster. There are three 480 volt generators driven by Tier II Caterpillar 3512C Diesel engines which produce 1,030 kW each. These provide electrical power to the ship and the dredging hydraulics. There is one 480 volt emergency generator driven by a Tier II Caterpillar C18 Diesel engine which produces 425 kW.

  4. Trailing suction hopper dredger - Wikipedia

    en.wikipedia.org/wiki/Trailing_suction_hopper...

    Pressing – High-pressure pumps will pump water inside the hopper to loosen or even liquefy the substance, which can then be pumped via long hoses over great distances (f.i. ashore) Rainbowing – This is the same principle as pressing, but instead of transporting the substance it will simply be blown away. This is often used to create land.

  5. Water eductor - Wikipedia

    en.wikipedia.org/wiki/Water_eductor

    A water eductor or water dredge is an eductor-jet pump-based tool used by underwater archaeologists to remove sediments from an underwater archaeological site. Airlifts may be used for the same purpose. Archaeologists preparing a water dredge on a shallow site

  6. Tuvli 160 - Wikipedia

    en.wikipedia.org/wiki/Tuvli_160

    The Tuvli 160 (USCG id: 516564) [1] is an ocean-rated crewed flat-topped barge in the process of being adapted into a powered littorals at-sea excavator-boomed suction dredge mining vessel. [2] It is owned by Pomrenke Mining and its registered home port is Nome, Alaska, USA. [1] The Tuvli 160 was featured in 2018 season 10 of Bering Sea Gold.

  7. Airlift pump - Wikipedia

    en.wikipedia.org/wiki/Airlift_pump

    10. pump outlet L: liquid, usually wastewater LL: liquid level V: Vessel G: Gravel or solids. An airlift pump is a pump that has low suction and moderate discharge of liquid and entrained solids. The pump injects compressed air at the bottom of the discharge pipe which is immersed in the liquid.

  8. Goethals (dredge) - Wikipedia

    en.wikipedia.org/wiki/Goethals_(dredge)

    Goethals was an ocean-going hopper dredge operated by the United States Army Corps of Engineers named for George Washington Goethals, who supervised much of the building of the Panama Canal. The dredge's keel was laid at Bethlehem Shipbuilding Corporation 's Fore River Plant, Quincy, Massachusetts, on 5 October 1936 with launch in August 1937 ...

  9. Dredging - Wikipedia

    en.wikipedia.org/wiki/Dredging

    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.

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