Great Lakes Dredge & Dock Company

Great Lakes Dredge & Dock Company (GLDD) is the largest provider of dredging and marine construction services in the United States. Established in 1890, the corporation operates a mobile nationwide fleet of approximately 200 specialized vessels, including hopper, mechanical, and hydraulic dredges. Its core operations focus on deepening shipping channels, expanding ports, restoring coastal wetlands, and replenishing storm-damaged shorelines. The firm is also actively expanding its maritime engineering capabilities into the domestic offshore wind energy sector.