Great Lakes Dredge & Dock Corp is a provider of dredging services in the United States. The Company is also fully engaged in expanding its core business into the offshore energy industry. Dredging involves the enhancement or preservation of the navigability of waterways or the protection of shorelines through the removal or replenishment of soil, sand, or rock. Company work generally is to performed in coastal waterways and deep water ports. Its project portfolio includes Coastal Restoration, Coastal Protection, Ports and Harbors, International, and Inland Dredging.