NAICS Code 488390 Other Support Activities for Water Transportation


Transportation and Warehousing


This industry comprises establishments primarily engaged in providing services to water transportation (except port and harbor operations; marine cargo handling services; and navigational services to shipping).

Cross References

Establishments primarily engaged in
  • Ship painting: classified in Industry 238320, Painting and Wall Covering Contractors
  • Providing ship janitorial services: classified in Industry 561720, Janitorial Services
  • Operating port, harbor, or canal facilities: classified in Industry 488310, Port and Harbor Operations
  • Providing dredging services: classified in Industry 237990, Other Heavy and Civil Engineering Construction
  • Providing stevedoring and other marine cargo handling services: classified in Industry 488320, Marine Cargo Handling
  • Providing navigational services to shipping: classified in Industry 488330, Navigational Services to Shipping
  • Providing ship overhauling or repairs in a shipyard: classified in U.S. Industry 336611, Ship Building and Repairing.

Illustrative Examples

  • Ship scaling services
  • Marine cargo checkers and surveyors
  • Floating drydocks (i.e., maintenance and routine repairs for ships)

Industries Included

  • Cargo checkers, marine
  • Cargo surveyors, marine
  • Drydocks, floating (i.e., routine repair and maintenance of ships)
  • Marine cargo checkers and surveyors
  • Ship dismantling at floating drydock
  • Ship scaling services not done at a shipyard

Industry Leaders