Great Lakes Dredge & Dock Corporation provides dredging services in the United States. The company offers capital dredging that consists of port expansion projects; coastal restoration and land reclamations; trench digging for pipelines, tunnels, and cables; and other dredging related to the construction of breakwaters, jetties, canals, and other marine structures. It is also involved in coastal protection projects comprising moving sand from the ocean floor to shoreline locations where erosion threatens shoreline assets; maintenance dredging, which consists of the re-dredging of previously deepened waterways and harbors to remove silt, sand, and other accumulated sediments; lake and river dredging, inland levee and construction dredging, environmental restoration and habitat improvement, and other marine construction projects; and foreign capital projects, such as channel deepening and port infrastructure development. In addition, the company operates hydraulic dredges, hopper dredges, mechanical dredges, unloaders, drill boats, and material and other barges equipment.