NAICS Code 336611 — Ship Building and Repairing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 2 national industries under 33661 (Ship and Boat Building).

Code	336611
Title	Ship Building and Repairing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,300 employees

Official definition (2022 NAICS)

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

Is a business under 336611 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 336611 qualifies as a small business if it does not exceed 1,300 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 336611 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	336	Transportation Equipment Manufacturing
Industry Group	3366	Ship and Boat Building
NAICS Industry	33661	Ship and Boat Building
National Industry	336611	Ship Building and Repairing

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
3731	Ship Building and Repairing

Related National Industry codes

• 336612 — Boat Building

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.