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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /48839

    NAICS Demand Lane

    Other Support Activities for Water Transportation, Contract Opportunities

    310 total opportunities (310 active) tied to NAICS 48839 across federal, state, local, and forecast sources.
    NAICS 48839Federal + SLED310 total
    View NAICS definition →
    Total Opportunities
    310
    Across all indexed sources
    Active Estimate
    310
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 48839.

    DEPT OF DEFENSE

    UWILD HULL INSPECTION

    Archived

    AI Summary

    The Department of Defense is seeking quotes for underwater hull inspection services for the USNS Amelia Earhart. The solicitation number is N3220526Q7258, and the due date for quotes is extended to October 5, 2026. The work will take place in Guam from October 18 to October 23, 2026, under a Firm-Fixed-Price arrangemen…

    VA

    Posted Sep 29, 2026Due Oct 5, 2026Combined Synopsis/SolicitationNAICS 488390Sol: N3220526Q7258
    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

    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→

    DEPT OF DEFENSE

    Underwater Hull Maintenance and Repair Services - Military Sealift Command

    Archived

    AI Summary

    The Department of Defense is seeking proposals for underwater hull maintenance and repair services for Military Sealift Command vessels. This RFP includes hull cleaning, inspection, and incidental repairs, with services to be performed worldwide. Proposals are due by 5:00 PM Eastern Time on 20 August 2026, and must be …

    VA

    Posted Aug 11, 2026Due Aug 20, 2026Combined Synopsis/SolicitationNAICS 488390Sol: N3220526R0002
    View details→

    DEPT OF DEFENSE

    FY26 SHOALHUNTER DRY DOCK MAINTENANCE AND REPAIRS

    Archived

    AI Summary

    The Department of Defense is seeking proposals for the maintenance and repair of the Shoalhunter dry dock. This includes all labor, materials, and equipment necessary for minor repairs, retrofitting, and upgrades to both interior and exterior equipment. Proposals are due by July 28, 2026.

    WA

    Posted Jul 21, 2026Due Jul 28, 2026SolicitationNAICS 488390Total Small Business Set-Aside (FAR 19.5)Sol: W912DW26QA084
    View details→

    DEPT OF DEFENSE

    JB CHS Small Boat Maintenance and Repair Services

    Archived

    AI Summary

    The Department of Defense is seeking offers for small boat maintenance and repair services at Joint Base Charleston. This RFQ requires contractors to provide labor, materials, and equipment for cleaning, inspections, and repairs of vessels. The acquisition is set aside for small businesses and includes a base year with…

    SC

    Posted Jul 17, 2026Due Aug 14, 2026Combined Synopsis/SolicitationNAICS 488390Small Business Set Aside - TotalSol: FA441826Q0051
    View details→

    DEPARTMENT OF HOMELAND SECURITY

    USCG MSRT WEST PIER-SIDE AND UNDERWAY TRAINING VESSELS

    Archived

    AI Summary

    The US Coast Guard is seeking quotes for training vessels for the Maritime Security Response Team (MSRT) West. This RFQ is for services related to water transportation, with a performance period from July 29, 2026, to September 23, 2026. Quotes are due by July 21, 2026, at 10:00 AM Pacific Time.

    VA

    Posted Jul 14, 2026Due Jul 21, 2026Combined Synopsis/SolicitationNAICS 488390Sol: 34269PR260000032
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    212
    sled
    93
    forecast
    5

    Related NAICS Codes

    • 48-49, 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

    • 48839 Definition→
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    About NAICS 48839

    This industry comprises establishments primarily engaged in providing support activities for water transportation, such as marine cargo handling, marine pilotage, and other related services. These activities facilitate the operation and management of water transportation but do not include the transportation of goods or passengers themselves.

    Read the full NAICS definition →