A
Ship Building and Repairing
Barges, Building and Repairing
Combat Vessels, Building and Repairing
Northrop Grumman Information Technology Inc
Crew Boats, Building and Repairing
Dredges, Building and Repairing
Lighters, Marine: Building and Repairing
Lighthouse Tenders, Building and Repairing
Offshore Supply Boats, Building and Repairing
Patrol Boats, Building and Repairing
Port Sanilac Harbor Commission
Submarines, Building and Repairing
Submersible Marine Robots, Manned or Unmanned
Tenders, Ships: Building and Repairing
Tugboats, Building and Repairing