The Great Lakes fleet currently consists of nine cutter suction dredges, seven trailing hopper dredges, five mechanical dredges, two drillboats, a fleet of hydraulic loaders, barges, booster pumps, survey vehicles, and dozens of other specialized support vessels, including land equipment. The diversity of the Great Lakes fleet allows the company to execute dredging contracts of all sizes and degrees of complexity.
Hopper Dredges are designed to vacuum material from the sea floor through drag arms that load the material into the hold of the vessel.
Cutter Suction or Hydraulic dredges are floating platforms equipped with a rotating cutter that excavates the sea floor and feeds the loosened material into a pipe and pump system that transports the material and water slurry up t0 distances of five miles.
Rivers and Lakes specialize in the dredging of challenging shallow water environments: lakes, reservoirs, rivers and inland channels. This division maintains one of the largest fleets of dredging and marine construction equipment within the inland river system.
GLDD designs and builds specialty equipment to either enhance or address special requirements from clients. Some ideas involve adaptation, or improvement, of existing technology. Other ideas may involve the development of completely new technology.