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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

    315 total opportunities (315 active) tied to NAICS 48839 across federal, state, local, and forecast sources.
    NAICS 48839Federal + SLED315 total
    View NAICS definition →
    Total Opportunities
    315
    Across all indexed sources
    Active Estimate
    315
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 48839.

    DEPT OF DEFENSE

    USNS NEWPORT - COFFERDAM INSTALLATION SERVICES

    Active

    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

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

    Active

    AI Summary

    The Navy is requesting quotes for commercial diving services to perform an Underwater Inspection in Lieu of Dry-docking (UWILD) on the USNS SACAGAWEA in Guam. This is an unrestricted solicitation, with quotes due by the date and time specified in the attached SF 1449. Quotes must be submitted through the PIEE Solicitat…

    VA

    Posted Oct 20, 2026Due Oct 26, 2026SolicitationNAICS 488390Sol: N3220527Q7018
    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→

    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→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    214
    sled
    97
    forecast
    4

    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

    • 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 →