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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]
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.
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
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.
Dredging continued around the clock, so the crew worked in shifts. [3] Men worked 10 days and then got four days off. The ship had a machine shop, store, a crew lounge with a ping-pong table, a six-bed medical dispensary, laundry facilities, a cook staff and full galley for meal service, and separate dining rooms for officers and men.
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.
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