NAICS 488390: Other Support Activities for Water Transportation
Other Support Activities for Water Transportation is NAICS code 488390. A business is small under it with $47 million or less in average annual receipts. 1 federal contract is open on SAM.gov under this code right now.
- SBA size standard
- $47 million or less in average annual receipts
- Open contracts now
- 1
- Federal spending, FY2025
- $215.2 million
- Share won by small businesses
- 31%
- Small businesses registered
- 613
Open federal contracts for other support activities for water transportation
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Due in 1 dayOct 5, 2026
What NAICS 488390 covers
The Census Bureau's NAICS index lists these kinds of work under 488390:
- 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
Read the full definition, including what's excluded, on census.gov.
SBA size standard for 488390
To count as a small business for a contract assigned NAICS 488390, your business must have $47 million or less in average annual receipts. Receipts are averaged over your last five completed fiscal years.
From SBA's table of size standards, effective Mar 17, 2023. Confirm it with SBA's size standards tool before you certify your size.
Who buys other support activities for water transportation
Agencies that awarded the most under NAICS 488390 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Navy | $346.9 million |
| Maritime Administration | $188.8 million |
| Agricultural Marketing Service | $24.6 million |
| Department of the Army | $21.3 million |
| U.S. Coast Guard | $10.9 million |
| Department of the Air Force | $3.2 million |
| National Oceanic and Atmospheric Administration | $2.8 million |
| Departmental Offices | $2.8 million |
Open notices right now come from Dept of Defense (1).
Set-asides on open 488390 contracts
- No set-aside (full and open): 1
Not sure which set-asides you qualify for? Try the free SBA certification screener, or read set-aside contracts, explained.
Your competition
613 businesses with active SAM.gov registrations are rated small under NAICS 488390, most of them in California (85), Florida (81), Texas (68), Virginia (49) and Louisiana (22). Look any of them up with the free CAGE code and UEI lookup.
Federal spending under 488390 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $216.1 million |
| FY2025 | $215.2 million |
| FY2026 | $173 million |
| FY2027 (so far) | $0 |
Source: USAspending.gov, all contract awards with this NAICS code. Fiscal years start October 1.
Related NAICS codes
- 488310 Port and Harbor Operations
- 488320 Marine Cargo Handling
- 488330 Navigational Services to Shipping
Frequently asked questions
What is NAICS code 488390?
488390 is the 2022 NAICS code for Other Support Activities for Water Transportation. The Census Bureau's index lists work such as cargo checkers, marine, cargo surveyors, marine, drydocks, floating (i.e., routine repair and maintenance of ships) under it. Federal contracting uses the 2022 codes.
What is the SBA size standard for NAICS 488390?
$47 million or less in average annual receipts. A business at or under that is small for contracts assigned this code. The current SBA table took effect Mar 17, 2023.
Are there government contracts for other support activities for water transportation?
Yes. 1 federal contract opportunities under NAICS 488390 are open on SAM.gov right now. Agencies obligated about $215.2 million under this code in fiscal year 2025, according to USAspending.gov.
How do I add NAICS code 488390 to my SAM.gov registration?
Update your entity registration on SAM.gov and add the code on the Goods and Services page, in the Assertions section. You can list several NAICS codes and mark one as your primary. Changes are free.
Keep going
- Search other NAICS codes by keyword or company
- How to choose NAICS codes for government contracts
- NAICS codes with the most open federal contracts
FedReady is an independent company, not affiliated with SBA, SAM.gov, the Census Bureau or any government agency. Open-contract counts come from SAM.gov and update daily; spending figures come from USAspending.gov.