Great Lakes Dredge & Dock Company
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Designs and Build Specialty Equipment Services
GLDD designs and build specialty equipment to either enhance or address special requirements of clients. Some ideas involve adaptation or improvement of existing technology, other ideas may involve development of completely new technology. Among the auxiliary equipment used by GLDD are:
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- Material barges carry dredged material loaded into them by bucket or cutter suction dredges. GLDD has nineteen such barges ranging from 1,540 to 7,100 yd³ (1,180 to 5,430 m³)
- Drillboats, which fragment rock with explosives prior to removal by bucket or cutter suction dredge. The company has two state of the art drillboats.
- Booster pumps, of which the company has seven, provide auxiliary power to extend the distance the company`s fleet of cutter suction dredges and trailing suction hopper dredges can pump dredged material. They range in power from 3,600 to 14,400 hp (2,685 to 10,830 kW).
- Spider barges, which are used to load barges with material being pumped by a cutter suction dredge. There are currently three spider barges in the Great Lakes fleet.
- Hydraulic Unloaders are used to rehandle material from a hopper barge to an upland disposal site. GLDD currently has one of these units.