Other Support Activities for Water Transportation: NAICS 488390
Browse federal contract opportunities classified under NAICS code 488390 (Other Support Activities for Water Transportation). Find active solicitations on SAM.gov, understand size standards, and discover set-aside opportunities for your business.
About NAICS 488390
Other Support Activities for Water Transportation. This industry falls under the Transportation and Warehousing sector (NAICS codes beginning with 48).
Federal agencies use NAICS code 488390 when posting contract opportunities on SAM.gov to classify the type of work being solicited. Businesses that operate in the other support activities for water transportation space should include this code in their SAM.gov registration and capability statements to ensure they appear in relevant searches.
How to Use NAICS 488390 in Federal Contracting
To compete for federal contracts under NAICS 488390, your business should be registered in SAM.gov with this NAICS code listed in your entity profile. When agencies post solicitations for other support activities for water transportation work, they reference this code to determine the applicable small business size standard and any set-aside eligibility.
If you hold certifications such as 8(a), HUBZone, SDVOSB, or WOSB, you may be eligible for set-aside contracts under this NAICS code. These set-asides limit competition to certified small businesses, giving you a significant advantage in winning federal work.
FedOverwatch monitors SAM.gov daily and can automatically match you with new opportunities under NAICS 488390. Set up your profile with your NAICS codes and certifications to receive personalized contract alerts.
NAICS 488390 Market Intelligence
Based on 3 years of federal award data from USAspending.gov, the other support activities for water transportation market has seen 2,104 contract awards totaling $549.2M in value. The median contract size is $34K, with approximately 58 new awards per month.
Total Awards (3yr)
2,104
Total Value
$549.2M
Median Contract
$34K
Competitors
124
Contract value distribution
367 small business awards ($153.3M total value,$175K median)
124 companies compete for NAICS 488390 contracts
See who's winning, their award values, and where you fit in the market
Explore CompetitorsSize Standards
The SBA establishes size standards for each NAICS code to define what qualifies as a "small business" for federal contracting purposes. For NAICS 488390 (Other Support Activities for Water Transportation), the size standard is based on either average annual receipts or number of employees, depending on the specific industry. Meeting the size standard for your primary NAICS code is required to qualify for small business set-aside contracts.
Visit the SBA Size Standards Table to find the current threshold for NAICS 488390.
Recent NAICS 488390 Opportunities
View all →The Department of Defense is procuring small boat maintenance and repair services for Joint Base Charleston. The contractor will provide labor, materials, and equipment necessary for cleaning, preventative maintenance, inspections, and repair services for vessels and support equipment, ensuring personnel have required certifications. The contract spans one base year with four optional years, and offers are due by August 14, 2026.
The Department of the Army is seeking a contractor to perform repairs and rebuilding of equipment for the Clearwater Project Office. The procurement focuses on ships, small craft, pontoons, and floating docks. This is a total small business set-aside effort.
The Department of Defense is procuring life raft services, specifically modified and recertified UNI-PAC II life rafts and a Mechanical Reverse Osmosis Desalinator. Key deliverables include two life rafts configured for CMV-22B tail-ramp deployment and inspection and recertification reports for each unit.
The Department of Defense is procuring operation, maintenance, and repair services for the Motor Vessel Independence, which supports various naval operations and research activities. The contractor will be responsible for ensuring the vessel's readiness for undersea surveillance, oceanographic surveys, and other government agency support tasks. Key requirements include expertise in vessel operations and maintenance, with the work primarily based at Naval Base Ventura County in Port Hueneme, CA.
The Department of Defense is procuring underwater hull maintenance and repair services for the Military Sealift Command, specifically for Government Owned, Government Operated vessels. Key requirements include hull cleaning, inspection, incidental repairs, and cofferdam services to be performed worldwide. Proposals are due by 5:00 PM Eastern Time on 22 July 2026, and the anticipated award date is 10 August 2026.
The Department of the Interior's US Fish and Wildlife Service is ratifying a lease for dock space to support the M/V Spencer F. Baird. The procurement provides rental of non-building facilities for water transportation support activities in Alpena, Michigan.
The Department of Defense is awarding a contract for the INR 250 Floating Dock System to EZ Docks Unlimited LLC. The procurement is aimed at supporting water transportation activities, with no set-aside category mentioned.
Frequently Asked Questions
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