Orion Marine Group, Inc. (Orion) is a marine specialty contractor serving the heavy civil marine infrastructure market. The Company provides a range of marine construction services on, over and under the water along the Gulf Coast, the Atlantic Seaboard, the West Coast, Canada, and in the Caribbean Basin. Orion also provides dredging, repair and maintenance, and other specialty services. Its customers are federal, state and municipal governments, as well as private commercial and industrial enterprises. Its marine construction services include construction of marine transportation facilities, marine pipelines, bridges and causeways, and marine environmental structures. Orion's dredging service involves removing mud and silt from the channel floor. The Company's specialty services include salvage, demolition, surveying, towing, diving and underwater inspection, excavation and repair.