NAICS 488390: Other Support Activities for Water Transportation
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).
$47M receiptsSBA size standard
0open contracts now
15posted in the last 12 months
4883Support Activities for Water Transportation
Open government contracts under NAICS 488390
Nothing is open under NAICS 488390 today. New solicitations post every day; search all open contracts or check back.
What NAICS 488390 covers
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).
Examples of work in this code:
Floating drydocks (i.e., routine repair and maintenance of ships)
Ship scaling services
Marine cargo checkers and surveyors
Not in this code
Establishments primarily engaged in ship painting are classified in Industry 238320, Painting and Wall Covering Contractors.
Establishments primarily engaged in providing ship janitorial services are classified in Industry 561720, Janitorial Services.
Establishments primarily engaged in operating port, harbor, or canal facilities are classified in Industry 488310, Port and Harbor Operations.
Establishments primarily engaged in providing dredging services are classified in Industry 237990, Other Heavy and Civil Engineering Construction.
Establishments primarily engaged in providing stevedoring and other marine cargo handling services (except warehousing) are classified in Industry 488320, Marine Cargo Handling.
Establishments primarily engaged in providing navigational services to shipping are classified in Industry 488330, Navigational Services to Shipping.
Establishments primarily engaged in providing ship overhauling or repairs in a shipyard are classified in U.S. Industry 336611, Ship Building and Repairing.
Establishments primarily engaged in providing towing services on inland waters are classified in U.S. Industry 483211, Inland Water Freight Transportation.
SBA size standard
A business is small under NAICS 488390 if it has no more than $47 million in average annual receipts (averaged over the last five completed fiscal years, including affiliates).
Source: SBA Table of Size Standards, effective 2023-03-17. Always check the size standard printed in the solicitation itself.
Who buys it
Departments that posted the most NAICS 488390 solicitations in the last two years:
USCGC HEALY CO2 Pull System Upgrade · Homeland Security · Washington · posted September 21, 2026
Hull cleaning & uwild amendment 2 · Department of Defense · Virginia · posted September 21, 2026
Underwater Hull Cleaning · Department of Defense · posted September 17, 2026
Hull cleaning & uwild amendment 1 · Department of Defense · Virginia · posted September 17, 2026
Hull cleaning & uwild · Department of Defense · Virginia · posted September 10, 2026
Underwater Hull Maintenance and Repair Services - Military Sealift Command · Department of Defense · Virginia · posted August 19, 2026
NSAND Gaeta Floating Pier · Department of Defense · posted August 17, 2026
Training Vessels for USCG Maritime Security Response Team · Homeland Security · California · posted August 14, 2026
Do this kind of work?
Send XL Eagle your price on an open other support activities for water transportation job. We write and submit the bid under our registrations. If we win, you do the work at your price. No fees.
NAICS 488390 is Other Support Activities for Water Transportation. 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).
What is the SBA size standard for NAICS 488390?
The size standard for NAICS 488390 is $47 million in average annual receipts. Firms at or under it count as small businesses for contracts assigned this code.
Are there government contracts for other support activities for water transportation?
None are open under NAICS 488390 today, but 15 were posted in the last 12 months. New ones post daily.
Can I bid on NAICS 488390 contracts without registering in SAM.gov?
You need an active SAM.gov registration to win a federal contract in your own name. If you would rather skip that, XL Eagle can bid as the prime contractor using your price, and you do the work as our subcontractor.
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