samsearch
    Platform
    01InfluenceShape the requirement before it's on your competitor's radar.
    Signal
    Recompete window opens in 42 days
    Facilities maintenance IDIQ$8.4M
    Forecast
    Agency spend up 18% next FY
    DoD facilitiesQ3 window
    02CaptureFind and qualify the work across every market.
    Federal91%
    Network engineering support — GSA MAS
    GSA541512
    SLED88%
    Custodial services — Fairfax County Public Schools
    K-12561720
    DIBBS79%
    Aircraft hydraulic fitting — DLA Aviation
    DLANSN 5330
    03AnalyzeExtract requirements and build the compliance matrix.
    Compliance matrix
    L.2.1Technical approachVol I
    L.3.4Staffing planVol I
    M.1Past performanceEvaluated
    SOW breakdown
    Requirements extracted38
    Mapped to Section L/M38
    Every extractionCited
    Ask Sammy
    “Do we meet the small business set-aside?”
    04ManageRun the pursuit through to award.
    Pipeline
    QualifyFacilities support · USACE
    CaptureComms upgrade · DLA
    ProposalShipyard dredging · NAVSEA
    PriyaAlex
    This week
    Submit past performance refsThu
    Confirm subK teamingFri
    Upload SF 33Mon
    05RespondDraft and submit your response.
    Drafting · Volume I
    247 words
    RFI response
    CompanyAcme Robotics LLC
    UEIJK4M8…
    Capability narrativeDrafted
    06FinanceGet paid faster on what you win.
    Capital available
    $2.4M against your award
    Facilities maintenance IDIQAwarded
    Partner matched
    LenderFederal Capital Partners
    Draw available$2.4M
    UnderwritingCleared
    The platform
    Influence
    Capture
    Analyze
    Manage
    Respond
    Finance
    One pipeline, six stages, start to award.
    See the whole platform
    Solutions
    By industry
    Tech & softwareSoftware and SaaS companies entering GovCon.Defense contractorsPrimes and subs in the defense industrial base.ConstructionBuilders bidding federal, state, and local work.CybersecuritySecurity vendors pursuing federal mandates.
    By team
    Capture managers & BDPipeline, qualification, and win strategy.Proposal teamsCompliance matrices and proposal drafting.Subcontractors & primesTeaming, subcontracting, and partner fit.
    By company size
    Small businessesSet-aside and small business contractors.EnterpriseLarge contractors running multiple pursuits.ConsultantsAdvisors and capture consultants.
    Browse all industries
    CustomersPricing
    ResourcesNew
    Learn
    AcademyCourses, guides, and playbooks.WebinarsLive sessions and recordings.DocsProduct documentation and setup guides.Implementation planOperational rollout guidance.
    Tools & data
    Free GovCon toolsCalculators, lookups, and more.Gov ExploreContracts, agencies, and NAICS codes.GovCon eventsConferences, training, and set-aside events.
    Latest blogIntroducing the New SamSearch: The Operating System for Government ContractingSamSearch has a new brand, a new site, and a new way of explaining what the platform actually does — the operating system for government contracting, organized around six stages instead of a single search box. Here's what changed and why.Read the post →
    All resources and tools
    Sign inRequest a demo
    /

    SamSearch Platform

    Stop searching. Start winning.

    AI-powered intelligence for the right opportunities, the right leads, and the right time.

    Book a Demo
    samsearch

    The Complete AI Platform for Government Contracting

    Platform
    • Product
    • Pricing
    • ROI calculator
    • Integrations
    • Changelog
    Solutions
    • Solutions
    • Customers
    • Comparisons
    • Market watch
    Resources
    • Blog
    • Free GovCon tools
    • Glossary
    • Docs
    Company
    • API & partnerships
    • Careers
    • Support
    • Compliance
    • Trust centre
    • Contact
    Recognised & verified
    SOC 2 Type II Compliant, SamSearchAWS Partner - Advanced, SamSearch on AWS MarketplaceGartner Peer Insights Customer First, SamSearch5.0RATED ON G2
    Ask AI about samsearch
    Ask ChatGPTAsk ClaudeAsk Perplexity
    Follow

    © 2026 samsearch. All rights reserved.

    Terms of usePrivacy policy
    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /4831

    NAICS Demand Lane

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

    1,036 total opportunities (1,036 active) tied to NAICS 4831 across federal, state, local, and forecast sources.
    NAICS 4831Federal + SLED1K total
    View NAICS definition →
    Total Opportunities
    1K
    Across all indexed sources
    Active Estimate
    1K
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 4831.

    DEPARTMENT OF COMMERCE

    VESSEL CHARTER - BUOY RECOVERY AND DEPLOYMENT

    Active

    AI Summary

    The Department of Commerce's National Oceanic and Atmospheric Administration is seeking a vessel charter service for buoy recovery and deployment in Santa Barbara, CA. This opportunity is categorized under NAICS code 483111 and is presented as a combined synopsis/solicitation. Interested bidders should prepare to respo…

    MO

    Posted Oct 5, 2026Due Oct 13, 2026Combined Synopsis/SolicitationNAICS 483111Sol: 1333MJ27Q0001
    View details→

    DEPT OF DEFENSE

    N3220525R6003 - SURTASS-E RFP

    Active

    AI Summary

    The Department of Defense is soliciting proposals for a fixed-priced time charter of a vessel to tow an acoustic array for U.S. Navy operations. The vessel must maintain heading stability and operate worldwide, including in challenging environments. The solicitation includes a one-year base period with options for addi…

    VA

    Posted Oct 5, 2026Due Oct 22, 2026SolicitationNAICS 483111Sol: N3220525R6003
    View details→

    DEPT OF DEFENSE

    50-DAY U.S. JONES ACT TANKER TIME CHARTER

    Active

    AI Summary

    The Department of Defense is soliciting a 50-day time charter for a U.S. Jones Act tanker. Interested parties should refer to the attached RFP and supporting documents for detailed requirements and submission guidelines.

    VA

    Posted Oct 5, 2026Due Oct 9, 2026SolicitationNAICS 483111Sol: N3220527R6009
    View details→

    DEPT OF DEFENSE

    IE SHIMA BARGE TRANSPORTATION

    Active

    AI Summary

    This solicitation requests quotes for barge transportation services under NAICS code 483113. It is a commercial service opportunity under Full and Open Competition. Offerors must provide vessel information with their quotes. The solicitation is legally non-binding and does not commit the US Government.

    AP

    Posted Oct 5, 2026Due Oct 7, 2026SolicitationNAICS 483113Sol: M2900027Q3000
    View details→

    DEPT OF DEFENSE

    SUBMARINE RESCUE VESSEL EXTENDED TIME CHARTER

    Active

    AI Summary

    The Department of Defense is soliciting a fixed-price time charter for one Jones Act qualified Offshore Supply Vessel to support submarine rescue operations. The contract includes a one-year base period with options and is focused on the Hampton Roads area. Proposals are due by 15 October 2026.

    VA

    Posted Oct 2, 2026Due Oct 15, 2026SolicitationNAICS 483111Sol: N3220526R6077
    View details→

    DEPT OF DEFENSE

    85-DAY DRY CARGO TIME CHARTER

    Active

    AI Summary

    The Department of Defense, specifically the Navy, has released RFP N3220526R6136 for an 85-day dry cargo time charter. The opportunity is full and open, with a closing date of October 7, 2026, at 1300 Eastern Time. Interested parties should refer to the attached documents for further details.

    VA

    Posted Oct 1, 2026Due Oct 7, 2026SolicitationNAICS 483111Sol: N3220526R6136
    View details→

    DEPT OF DEFENSE

    59-DAY DRY CARGO TIME CHARTER

    Active

    AI Summary

    The Department of Defense, specifically the Department of the Navy, is seeking sources for a 59-day dry cargo time charter. Interested parties should refer to the attached Sources Sought Notice N32205-SS-N321-27-001 for further details.

    VA

    Posted Oct 1, 2026Due Oct 8, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N321-27-001
    View details→

    DEPT OF DEFENSE

    DRY CARGO VOYAGE CHARTER

    Archived

    AI Summary

    The Department of Defense, specifically the Department of the Navy, is seeking sources for a dry cargo voyage charter. Interested parties should refer to the attached Sources Sought Notice N32205-SS-N103-26-177 for further details.

    VA

    Posted Oct 1, 2026Due Oct 1, 2026Sources SoughtNAICS 483111Sol: N32205-SS-N103-26-177
    View details→

    DEPT OF DEFENSE

    TUGCON, OPEN-OCEAN TOW

    Active

    AI Summary

    The Department of Defense, specifically the Navy, has issued a Sources Sought Notice for open-ocean towing services under NAICS code 483111. Interested parties should refer to the attached document for further details.

    VA

    Posted Sep 30, 2026Due Oct 6, 2026Sources SoughtNAICS 483111Sol: N32205-SS-PM4-26-176
    View details→

    DEPT OF DEFENSE

    ESD N3220526R0018 SOLICITATION

    Archived

    AI Summary

    The Department of Defense, specifically the Navy, has issued a special notice regarding solicitation N3220526R0018, which has been reposted under N3220526R1018 due to technical issues. Interested parties should refer to the provided link for further details.

    VA

    Posted Sep 29, 2026Special NoticeNAICS 483111Total Small Business Set-Aside (FAR 19.5)Sol: N3220526R0018
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    1,012
    sled
    20
    forecast
    4

    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

    • 4831 Definition→
    • Browse NAICS Codes→
    • PSC Contract Lanes→
    • AI Contract Categories→
    • Browse by Agency→
    • 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 →