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 (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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
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)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 1905 — Combat Ships and Landing Vessels
- PSC 1915 — Cargo and Tanker Vessels
- PSC 1925 — Special Service Vessels
- PSC 1930 — Barges and Lighters, Cargo
- PSC 1935 — Barges and Lighters, Special Purpose
- PSC 2090 — Miscellaneous Ship and Marine Equipment
- PSC J019 — Maintenance, Repair and Rebuilding of Equipment: Ships, Small Craft, Pontoons, and Floating Docks
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 336611 valid in 2022? ▾
Yes, 336611 is a valid 6-digit 2022 NAICS national industry code representing 'Ship Building and Repairing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 336611? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,300 employees for NAICS code 336611 (Ship Building and Repairing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 336611? ▾
According to official Census Bureau concordance tables, NAICS code 336611 (Ship Building and Repairing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3731 - Ship Building and Repairing.
Related Pages & Tools
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.
- NAICS 336611 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Ship Building and Repairing).
- 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.