336611 Ship Building and Repairing

Official definition

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.

Examples Census gives

• Barge building
• Cargo ship building
• Drilling and production platforms, floating, oil and gas, building
• Passenger ship building
• Submarine building
• Yachts built in shipyards

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

• 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.
• Ship repairs performed in floating drydocks are classified in Industry 488390, Other Support Activities for Water Transportation.

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 336611

The Census index assigns these 26 activities to this code. If your business matches one, this is your code.

• Barge building
• Cargo ship building
• Container ship building
• Dredge building
• Drilling and production platforms, floating, oil and gas, building
• Drydock, floating, building
• Ferryboat building
• Fireboat building
• Fishing boat, commercial, building
• Hydrofoil vessel building and repairing in shipyard
• Naval ship building
• Oil and gas offshore floating platforms manufacturing
• Passenger ship building
• Patrol boat building
• Sailing ships, commercial, manufacturing
• Ship dismantling at shipyards
• Ship repair done in a shipyard
• Ship scaling services done at a shipyard
• Ships (i.e., not suitable or intended for personal use) manufacturing
• Shipyard (i.e., facility capable of building ships)
• Submarine building
• Towboat building and repairing
• Tugboat building
• Underwater remotely operated vehicles (ROVs) manufacturing in shipyards
• Unmanned and robotic watercraft manufacturing in shipyards
• Yachts built in shipyards

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 336611

To count as a small business for SBA loans and federal contracts under NAICS 336611, your business (including affiliates) must not exceed 1,300 employees. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 3011, 3315), so treat them as a starting point and check the definition.

• 30110Building of ships and floating structuresUK SIC
• 33150Repair and maintenance of ships and boatsUK SIC

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Similar codes to compare

• 336612Boat Building