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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /4831

    NAICS Demand Lane

    Deep Sea, Coastal, and Great Lakes Water Transportation, Contract Opportunities

    1,066 total opportunities (1,066 active) tied to NAICS 4831 across federal, state, local, and forecast sources.
    NAICS 4831Federal + SLED1.1K total
    View NAICS definition →
    Total Opportunities
    1.1K
    Across all indexed sources
    Active Estimate
    1.1K
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 4831.

    DEPARTMENT OF COMMERCE

    CHARTER VESSEL TO CONDUCT A LONGLINE SURVEY IN THE EASTERN BERING SEA, ALEUTIAN ISLANDS REGION, AND GULF OF ALASKA

    Active

    AI Summary

    NOAA is conducting market research for a charter vessel to conduct a longline survey for sablefish and other groundfish in the Eastern Bering Sea, Aleutian Islands, and Gulf of Alaska. Interested vendors should submit a capabilities statement, vessel specifications, recent experience, cost-recovery feedback, and a roug…

    WA

    Posted Nov 14, 2026Due Nov 27, 2026Sources SoughtNAICS 483114Sol: REQUIREMENTS-26-3041
    View details→

    DEPT OF DEFENSE

    TANKER VOYAGE CHARTER

    Active

    AI Summary

    The Department of the Navy is seeking information from industry regarding a tanker voyage charter under Sources Sought Notice N32205-SS-N35C-27-021. The notice is for market research and does not itself constitute a solicitation or commitment to award a contract. Consult the attached notice for voyage, vessel, and resp…

    VA

    Posted Nov 12, 2026Due Nov 18, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N35C-27-021
    View details→

    DEPT OF DEFENSE

    TANKER VOYAGE CHARTER

    Active

    AI Summary

    The Department of the Navy issued a sources sought notice for a tanker voyage charter under notice N32205-SS-N35C-27-019. The notice is intended to identify capable providers; the available information does not specify charter requirements, route, vessel characteristics, or whether a future solicitation will be issued.

    VA

    Posted Nov 12, 2026Due Nov 19, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N35C-27-019
    View details→

    DEPT OF DEFENSE

    DRY CARGO TIME OR VOYAGE CHARTER

    Active

    AI Summary

    The Department of the Navy has amended sources sought notice N32205-SS-N321-27-015 for dry cargo time or voyage charter services. Amendment 0001 is attached; prospective maritime carriers should review the notice and amendment for the requirement details and response instructions. The opportunity is listed under NAICS …

    VA

    Posted Nov 10, 2026Due Nov 16, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N321-27-015
    View details→

    DEPT OF DEFENSE

    120-DAY TANKER TIME CHARTER WITH TWO 60-DAY OPTIONS

    Active

    AI Summary

    The Department of the Navy is seeking information on a 120-day tanker time charter, with two additional 60-day options. This is a sources sought notice, not a solicitation or award. Amendments A0001 and A0002 have been posted; interested vendors should review the notice and amendments for requirements and response inst…

    VA

    Posted Nov 10, 2026Due Nov 12, 2027Sources SoughtNAICS 483111Sol: N32205-SS-N351-27-010
    View details→

    DEPT OF DEFENSE

    30-DAY DRY CARGO TIME CHARTER

    Active

    AI Summary

    The Department of the Navy is seeking information on a 30-day dry cargo time charter under Sources Sought Notice N32205-SS-N321-27-017. This is a market-research notice, not necessarily a solicitation or commitment to award; interested vessel operators should review the notice for vessel, cargo, and response requiremen…

    VA

    Posted Nov 9, 2026Due Nov 16, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N321-27-017
    View details→

    DEPT OF DEFENSE

    173-DAY DRY CARGO TIME CHARTER

    Archived

    AI Summary

    The Department of the Navy seeks industry information regarding a 173-day time charter for dry cargo transportation. This is a Sources Sought notice, not a solicitation; the attached notice contains further requirements and response instructions. Contract details and acquisition procedures are not provided in the listi…

    VA

    Posted Nov 6, 2026Due Nov 12, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N321-27-016
    View details→

    DEPT OF DEFENSE

    TANKER VOYAGE CHARTER

    Archived

    AI Summary

    The Department of the Navy is soliciting a tanker voyage charter under RFP N3220527R6019. Amendment 0001 has been released; interested vendors should review the attached solicitation and supporting documents for the charter requirements and submission details. The opportunity is listed under NAICS 483111.

    VA

    Posted Nov 6, 2026Due Nov 12, 2026SolicitationNAICS 483111Sol: N3220527R6019
    View details→

    DEPT OF DEFENSE

    ANCILLARY SURFACE CRAFT (ASC) SHIPPING

    Archived

    AI Summary

    The Department of the Navy is seeking information on shipping ancillary surface craft under Sources Sought Notice N32205-SS-N103-27-014. This notice is for market research and is not necessarily a solicitation or request for offers. Interested vendors should review the attached notice for requirements, response instruc…

    VA

    Posted Nov 5, 2026Due Nov 9, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N103-27-014
    View details→

    DEPT OF DEFENSE

    TUGCON; OPEN-OCEAN TOW

    Archived

    AI Summary

    The Department of the Navy has posted RFP N3220527R6016 for open-ocean tug towing services. The solicitation includes an attached Q&A 0001, which interested vendors should review for clarifications. The opportunity is identified under NAICS 483111 and is set aside for small businesses. The stated submission deadline is…

    VA

    Posted Nov 5, 2026Due Nov 6, 2026SolicitationNAICS 483111Total Small Business Set-Aside (FAR 19.5)Sol: N3220527R6016
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    1,036
    sled
    26
    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

    • 4831 Definition→
    • Browse NAICS Codes→
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    • AI Contract Categories→
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    • Browse by State→

    About NAICS 4831

    This industry comprises establishments primarily engaged in the transportation of passengers or cargo by water over long distances, including deep sea, coastal, and Great Lakes routes. It includes operators of vessels such as cargo ships, tankers, and passenger ships.

    Read the full NAICS definition →