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DonJon Marine Co., Inc.
Eastern Shipbuilding Group, Inc.
Fincantieri, Bay Shipbuilding
Fincantieri, Marinette Marine
Fraser Shipyards, Inc.
Great Lakes Shipyard
Ironhead Marine
Nicholson Terminal & Dock Co.
Purves & Foster, Inc.
Trident Maritime Systems
BAE Systems
Basic Marine
Colonna's Shipyard, Inc.
Conrad Shipyard
Corn Island Shipyard
American Steamship Company
Andrie, Inc.
Apache Oil Corp
Central Marine Logistics
Express Marine, Inc.
Grand River Navigation
Great Lakes Dredge & Dock Co.
Great Lakes Fleet
Interlake Steamship Company
Keystone Shipping Co.
Lower Lakes Towing Ltd.
MARAD, United States Maritime Administration
Martin Gas & Oil, Beaver Island, MI
Marine Travelift
Pere Marquette Shipping Company
Port City Marine Services
US Army Corps of Engineers
US Coast Guard
VanEnkevort Tug & Barge, Inc.