Includes
Tugs; Towboats; Fire Boats; Ice Breakers; Repair Ships; Tender Vessels (Buoy, Lighthouse, Destroyer); Lightships; Cable Ships; Salvage and Submarine Rescue Vessels.

Excludes
Combat Vessels; Dredges.

Possible NAICS Codes
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
336611 – Ship Building and Repairing
336612 – Boat Building
488330 – Navigational Services to Shipping
541990 – All Other Professional, Scientific, and Technical Services
423860 – Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers
488310 – Port and Harbor Operations
532411 – Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing
541330 – Engineering Services
713930 – Marinas