NAICS Code Guide
NAICS 336611: Ship Building & Repair
Major shipyards (Newport News, Electric Boat, Bath Iron Works, Ingalls, NASSCO) plus smaller repair yards — the deepest defense industrial-base supply chain in the country.
Quick facts
- NAICS code
- 336611
- Title
- Ship Building & Repair
- SBA size standard
- 1,300 employees
Government buyers
Example contract opportunities
- Virginia-class submarine work (EB/HII)
- DDG-51 destroyer construction (BIW/HII)
- USCG OPC (Eastern)
Industry context
NAVSEA-approved welding and process qualifications, plus a deep ITAR/Berry overlay, define the supplier moat.
Related NAICS codes
- NAICS 541330 — Engineering Services
- NAICS 237990 — Other Heavy Construction
Related industries
States with the most activity in this NAICS
FAQs
- What is NAICS 336611?
- NAICS 336611 is the federal classification for Ship Building & Repair. Major shipyards (Newport News, Electric Boat, Bath Iron Works, Ingalls, NASSCO) plus smaller repair yards — the deepest defense industrial-base supply chain in the country.
- What is the SBA small-business size standard for NAICS 336611?
- The SBA size standard for NAICS 336611 is 1,300 employees. A business at or below this threshold qualifies for small-business set-asides under this code.
- Which agencies buy under NAICS 336611?
- Top federal buyers under NAICS 336611 include Department of the Navy, USCG, MARAD.
- What are example contracts under NAICS 336611?
- Virginia-class submarine work (EB/HII); DDG-51 destroyer construction (BIW/HII); USCG OPC (Eastern).
- What are the most-related NAICS codes?
- Closely related codes include 336612 (), 541330 (Engineering Services), 237990 (Other Heavy Construction).