Donjon Marine Co., Inc. uses its salvage and related emergency response service equipment, the 1,000-ton capacity derrick barge Chesapeake 1000 and 400-ton capacity derrick barge Columbia New York to supply heavy lift, diving and related salvage services to the dredge New York which sustained considerable damage after being struck by another vessel while in Newark Bay, New Jersey in January. Donjon Marine, Co., Inc., was contracted by owners of the 200-ft.-long excavator style dredge New York to supply heavy lift, diving and related salvage services after the dredge was struck by the 669-ft.