NAICS 336611: Ship Building and Repairing — Federal Contracts

What NAICS 336611 covers

The North American Industry Classification System (NAICS) is the standard the federal government uses to classify the industry of every contractor and every procurement. NAICS 336611 identifies businesses primarily engaged in ship building and repairing. When a contracting officer publishes a solicitation on SAM.gov, they tag it with the NAICS code that best matches the work — which is why getting your NAICS portfolio right inside SAM is the single most important step for showing up in agency searches.

Who buys NAICS 336611?

The federal agencies awarding the most contract value to vendors in this NAICS, based on 52 contractors tracked in the Mindy contractor database:

1. 1Dept Of The Navy
2. 2Dept Of The Army
3. 3Defense Logistics Agency
4. 4U.s. Coast Guard
5. 5Defense Advanced Research Projects Agency (DARPA)

Source: aggregated from the Mindy contractor database (prime contractor disclosures via SBA + agency directories).

Top contractors in NAICS 336611

The largest prime contractors associated with NAICS 336611, ranked by total reported federal contract value. These are your most likely incumbents — and your most likely teaming partners on recompetes:

1. 1
   Huntington Ingalls INC

   $10.4B total reported value
2. 2
   General Dynamics Corporation

   $9.6B total reported value
3. 3
   General Dynamics Information Technology INC.

   $5.3B total reported value
4. 4
   Lockheed Martin Corporation

   $4.5B total reported value
5. 5
   Huntington Ingalls Industries INC.

   $2.9B total reported value
6. 6
   BAE Systems Land & Armaments L.P.

   $2.7B total reported value
7. 7
   Amentum Government Services Holdings LLC

   $2.0B total reported value
8. 8
   Serco INC

   $1.5B total reported value

Values reflect each contractor's aggregate reported federal contract value (across all of their NAICS codes, not just 336611). Use as a ranking signal, not as a per-NAICS award total.