Water Transportation
| SIC8 | DESCRIPTION |
| 4412-0000 | DEEP SEA FOREIGN TRANSPORTATION OF FREIGHT |
| 4424-0000 | DEEP SEA DOMESTIC TRANSPORTATION OF FREIGHT |
| 4424-9901 | COASTWISE TRANSPORTATION FREIGHT |
| 4424-9902 | INTERCOASTAL TRANSPORTATION FREIGHT |
| 4424-9903 | WATER TRANSPORTATION TO NONCONTIGUOUS TERRITORIES FREIGHT |
| 4432-0000 | FREIGHT TRANSPORTATION ON THE GREAT LAKES |
| 4449-0000 | WATER TRANSPORTATION OF FREIGHT |
| 4449-0100 | CANAL AND INTRACOASTAL FREIGHT TRANSPORTATION |
| 4449-0101 | CANAL BARGE OPERATIONS |
| 4449-0102 | CANAL TRANSPORTATION FREIGHT |
| 4449-0103 | INTRACOASTAL (FREIGHT) TRANSPORTATION |
| 4449-0104 | TRANSPORTATION (FREIGHT) ON BAYS AND SOUNDS OF THE OCEAN |
| 4449-9901 | LAKE (FREIGHT) TRANSPORTATION EXCEPT ON THE GREAT LAKES |
| 4449-9902 | LOG RAFTING AND TOWING |
| 4449-9903 | RIVER TRANSPORTATION EXCEPT ON THE ST. LAWRENCE SEAWAY |
| 4481-0000 | DEEP SEA PASSENGER TRANSPORTATION EXCEPT FERRY |
| 4482-0000 | FERRIES |
| 4482-9901 | CAR LIGHTERS (FERRIES) |
| 4482-9902 | FERRIES OPERATING ACROSS RIVERS OR WITHIN HARBORS |
| 4482-9903 | INTRAPORT TRANSPORTATION |
| 4482-9904 | RAILROAD FERRIES |
| 4489-0000 | WATER PASSENGER TRANSPORTATION |
| 4489-9901 | AIRBOATS |
| 4489-9902 | EXCURSION BOAT OPERATORS |
| 4489-9903 | SIGHTSEEING BOATS |
| 4489-9904 | WATER TAXIS |
| 4491-0000 | MARINE CARGO HANDLING |
| 4491-0100 | MARINE LOADING AND UNLOADING SERVICES |
| 4491-0101 | LOADING VESSELS |
| 4491-0102 | STEVEDORING |
| 4491-0103 | UNLOADING VESSELS |
| 4491-0200 | DOCKS PIERS AND TERMINALS |
| 4491-0201 | DOCKS INCL. BUILDINGS AND FACILITIES: OPERATION AND MAINT. |
| 4491-0202 | MARINE TERMINALS |
| 4491-0203 | PIERS INCL. BUILDINGS AND FACILITIES: OPERATION AND MAINT. |
| 4491-0204 | WATERFRONT TERMINAL OPERATION |
| 4491-9901 | SHIP HOLD CLEANING |
| 4492-0000 | TOWING AND TUGBOAT SERVICE |
| 4492-9901 | DOCKING OF OCEAN VESSELS |
| 4492-9902 | MARINE TOWING SERVICES |
| 4492-9903 | SHIFTING OF FLOATING EQUIPMENT WITHIN HARBORS |
| 4492-9904 | TUGBOAT SERVICE |
| 4492-9905 | UNDOCKING OF OCEAN VESSELS |
| 4493-0000 | MARINAS |
| 4493-9901 | BOAT YARDS STORAGE AND INCIDENTAL REPAIR |
| 4493-9902 | MARINE BASINS |
| 4493-9903 | YACHT BASINS |
| 4499-0000 | WATER TRANSPORTATION SERVICES |
| 4499-0100 | MARINE SALVAGING AND SURVEYING SERVICES |
| 4499-0101 | MARINE SALVAGING |
| 4499-0102 | MARINE SURVEYORS |
| 4499-0103 | SALVAGING DISTRESSED VESSELS AND CARGOES |
| 4499-0200 | WATER TRANSPORTATION CLEANING SERVICES |
| 4499-0201 | BOAT CLEANING |
| 4499-0202 | SHIP CLEANING |
| 4499-0300 | BOAT AND SHIP RENTAL AND LEASING EXCEPT PLEASURE |
| 4499-0301 | BOAT HIRING EXCEPT PLEASURE |
| 4499-0302 | BOAT LIVERY EXCEPT PLEASURE |
| 4499-0303 | BOAT RENTAL COMMERCIAL |
| 4499-0304 | CHARTERING OF COMMERCIAL BOATS |
| 4499-0305 | STEAMSHIP LEASING |
| 4499-0400 | MARINE DISMANTLING AND SCRAPPING SERVICES |
| 4499-0401 | MARINE WRECKING SHIPS FOR SCRAP |
| 4499-0402 | SHIP DISMANTLING |
| 4499-9901 | BOATHOUSES COMMERCIAL |
| 4499-9902 | CANAL OPERATION |
| 4499-9903 | LIGHTERAGE |
| 4499-9904 | PILOTING VESSELS IN AND OUT OF HARBORS |
| 4499-9905 | SHIP REGISTERS |
