336611 — Ship Building and Repairing
Description
This U.S. industry comprises establishments primarily engaged in operating shipyards. Shipyards are fixed facilities with drydocks and fabrication equipment capable of building a ship, defined as watercraft typically suitable or intended for other than personal or recreational use. Activities of shipyards include the construction of ships, their repair, conversion and alteration, the production of prefabricated ship and barge sections, and specialized services, such as ship scaling.
Illustrative Examples
- Barge building
- Cargo ship building
- Drilling and production platforms, floating, oil and gas, building
- Passenger ship building
- Submarine building
- Yachts built in shipyards
Exclusions & Cross-References
- Fabricating structural assemblies or components for ships, or subcontractors engaged in ship painting,
- joinery, carpentry work, and electrical wiring installation--are classified based on the production process
- used; and
- Ship repairs performed in floating drydocks--are classified in Industry 488390, Other Support Activities for
- Water Transportation.
Overview Facts
| NAICS Code | 336611 |
|---|---|
| Industry Title | Ship Building and Repairing |
| SBA Size Standard | 1,300 employees |
| IRS PBA Code | 336610 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 336 → 3366 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3731 - Ship Building and Repairing (via SIC1987:3731→NAICS1997:336611→2002:336611→2007:336611→2012:336611→2017:336611→2022:336611)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 336611:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 3366
Frequently Asked Questions (FAQ)
Is 336611 a valid 2022 NAICS code?
NAICS 336611 is 'Ship Building and Repairing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,300 employees.
What is the SBA size standard for NAICS 336611?
The SBA small business size standard for NAICS 336611 is 1,300 employees (based on employees).
What is the legacy SIC code mapping for 336611?
NAICS code 336611 maps to the legacy 1987 SIC codes: 3731 - Ship Building and Repairing.