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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /488390

    NAICS Demand Lane

    Other Support Activities for Water Transportation, Contract Opportunities

    320 total opportunities (320 active) tied to NAICS 488390 across federal, state, local, and forecast sources.
    NAICS 488390Federal + SLED320 total
    View NAICS definition →
    Total Opportunities
    320
    Across all indexed sources
    Active Estimate
    320
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 488390.

    DEPT OF DEFENSE

    AFIT/ENG-CLEANROOM DI-RO TYPE I ULTRA-PURE WATER SYSTEM

    Active

    AI Summary

    The Air Force is conducting market research for preventive maintenance, service, and repair of AFIT’s Type I DI-RO ultrapure water system at Wright-Patterson Air Force Base, Ohio. Interested firms should submit a capability package by email by November 23, 2026, at 11:00 a.m. Eastern Time. No set-aside or solicitation …

    OH

    Posted Nov 5, 2026Due Nov 23, 2026Sources SoughtNAICS 488390Sol: FA860127Q0027
    View details→

    DEPT OF DEFENSE

    UNDERWATER INSPECTION IN LIEU OF DRY-DOCKING (UWILD) AND HULL CLEANING OF THE USNS SACAGAWEA

    Archived

    AI Summary

    The Navy seeks commercial diving services to perform an underwater inspection in lieu of dry-docking and hull cleaning on the USNS Sacagawea in Guam. The procurement is an unrestricted request for quotation under solicitation N3220527Q7018. Quotes must be submitted through PIEE by the deadline stated in the amended sol…

    VA

    Posted Nov 2, 2026Due Nov 5, 2026SolicitationNAICS 488390Sol: N3220527Q7018
    View details→

    NOTICE OF INTENT TO SOLE-SOURCE OFFSHORE SUPPORT VESSEL

    Archived

    AI Summary

    The U.S. Coast Guard intends to award Eclipse Group Inc. a sole-source, firm-fixed-price purchase order for an offshore support vessel supporting specialized maritime training for MSRT West Coast readiness. Services are required November 5–6, 2026, under FAR Part 13 procedures. This special notice is not a request for …

    Posted Oct 30, 2026Due Nov 2, 2026Special NoticeNAICS 488390Total Small Business Set-Aside (FAR 19.5)Sol: 34269PR270000001
    View details→

    DEPT OF DEFENSE

    USNS NEWPORT - COFFERDAM INSTALLATION SERVICES

    Archived

    AI Summary

    The Navy anticipates a purchase order for an ABS-recognized external specialist diving contractor to install, monitor, and remove waterborne cofferdams supporting the USNS NEWPORT in Port Orange, Texas. Performance is estimated for January 11–31, 2027, with award anticipated December 4, 2026. This is a presolicitation …

    VA

    Posted Oct 20, 2026Due Nov 5, 2026PresolicitationNAICS 488390Sol: N3220527Q7024
    View details→

    DEPT OF DEFENSE

    FLOATING DOCK MAINTENANCE

    Archived

    AI Summary

    The Department of Defense is seeking maintenance support for floating boat docks at CENSECFOR Learning Site Little Creek. This includes annual inspections and an extended warranty agreement for the modular floating boat dock system, which supports security boat training for NSF personnel.

    Posted Sep 24, 2026Due Oct 1, 2026Special NoticeNAICS 488390Sol: 017
    View details→

    DEPARTMENT OF HOMELAND SECURITY

    USCGC HEALY CO2 PULL SYSTEM UPGRADE

    Archived

    AI Summary

    The US Coast Guard is seeking contractors for the CO2 pull system upgrade on the USCGC HEALY. The project involves vessel repairs, including fire pull replacements and compliance with specific welding and fire prevention standards. The work is scheduled from October 1 to October 31, 2026, at Coast Guard Base Seattle. I…

    CA

    Posted Sep 21, 2026Due Sep 25, 2026Combined Synopsis/SolicitationNAICS 488390Total Small Business Set-Aside (FAR 19.5)Sol: 70Z08526Q0028325
    View details→

    DEPT OF DEFENSE

    HULL CLEANING & UWILD AMENDMENT 2

    Archived

    AI Summary

    Military Sealift Command seeks firm-fixed-price services for underwater hull cleaning and an Underwater Inspection in Lieu of Drydocking (UWILD) of the USNS Amelia Earhart. The contractor must provide labor, supervision, equipment, materials, and related services. Work is tentatively scheduled for October 18–23, 2026, …

    VA

    Posted Sep 21, 2026Due Sep 23, 2026Combined Synopsis/SolicitationNAICS 488390No Set aside usedSol: N3220526Q7258
    View details→

    DEPT OF DEFENSE

    UNDERWATER HULL CLEANING

    Archived

    AI Summary

    The Department of Defense, specifically the Navy, is soliciting for underwater hull cleaning services. This is a sole source requirement to Seaward Marine Services LLC due to unique capabilities and scheduling constraints. Interested companies may express their interest and capability, which will be considered for pote…

    WA

    Posted Sep 17, 2026Due Sep 17, 2026SolicitationNAICS 488390Sol: N0040626Q0551
    View details→

    DEPT OF DEFENSE

    J&A FOR CAPACITY INCREASE TO INDEFINITE DELIVERY, INDEFINITE QUANTITY FOR MOTOR VESSEL INDEPENDENCE SUPPORT SERVICES UNDER THE COGNIZANCE OF NAVAL FACILITIES ENGINEERING AND EXPEDITIONARY WARFARE CENTER

    Archived

    AI Summary

    This opportunity involves a justification for capacity increase to an indefinite delivery, indefinite quantity contract for motor vessel independence support services. It is under the cognizance of the Naval Facilities Engineering and Expeditionary Warfare Center, Department of Defense, and Department of the Navy.

    CA

    Posted Sep 3, 2026JustificationNAICS 488390Sol: N39430JA-26-0022
    View details→

    DEPT OF DEFENSE

    NSAND Gaeta Floating Pier

    Archived

    AI Summary

    The Department of Defense is soliciting proposals for the removal and replacement of the Port Operations floating pier in Gaeta. The project requires maintaining harboring capacity for 4 boats during construction and increasing it to 5 slips upon completion. The work must be finalized by FY26, with the RFQ deadline ext…

    AE

    Posted Aug 17, 2026Due Aug 31, 2026SolicitationNAICS 488390No Set aside usedSol: N6817126QN066
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    216
    sled
    101
    forecast
    3

    Related NAICS Codes

    • 48, Transportation and Warehousing→
    • 481, Air Transportation→
    • 4811, Scheduled Air Transportation→
    • 48111, Scheduled Air Transportation→
    • 481111, Scheduled Passenger Air Transportation→
    • 481112, Scheduled Freight Air Transportation→
    • 4812, Nonscheduled Air Transportation→
    • 48121, Nonscheduled Air Transportation→
    • 481211, Nonscheduled Chartered Passenger Air Transportation→
    • 481212, Nonscheduled Chartered Freight Air Transportation→

    Explore

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    About NAICS 488390

    This industry comprises establishments primarily engaged in providing support activities for water transportation, such as marine cargo handling, marine pilotage, and vessel salvage services. These activities facilitate the operation and management of waterborne transportation.

    Read the full NAICS definition →