NAICS 336611 - Ship Building and Repairing
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What is NAICS 336611
NAICS code 336611 covers establishments primarily engaged in operating shipyards that construct, repair, convert, and alter ships and other large watercraft. These shipyards are well-equipped fixed facilities featuring drydocks and fabrication equipment designed to handle vessels intended for commercial, military, or industrial use rather than personal or recreational purposes. The sector includes the production of prefabricated ship and barge sections, as well as specialized services like ship scaling. Businesses operating under this code range from large industrial shipbuilders to specialized repair yards, all contributing vital infrastructure to maritime transportation, defense, and offshore industries. Government agencies contract for these services to maintain naval readiness, support maritime commerce, and ensure infrastructure for offshore energy and research sectors.
Industry Classification for NAICS 336611
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
Breakdown for NAICS 336611
- Operates fixed facilities equipped with drydocks and fabrication equipment for building ships.
- Focuses on vessels intended for commercial, industrial, or military use, excluding recreational boats.
- Includes construction, repair, alteration, and conversion of ships and watercraft.
- Encompasses production of prefabricated ship and barge sections.
- Services include specialized activities such as ship scaling and outfitting.
Included Activities for NAICS 336611
- Construction of cargo ships, passenger ships, submarines, and barges.
- Repair and maintenance of existing vessels including structural and mechanical work.
- Conversion and alteration projects to upgrade or repurpose ships.
- Fabrication of prefabricated ship and barge sections for modular assembly.
- Building offshore drilling and production platforms for oil and gas industries.
- Specialized services such as ship scaling and outfitting.
- Testing and sea trials of newly constructed or repaired vessels.
- Compliance with maritime safety and environmental standards during construction and repair.
Business Types for NAICS 336611
- Commercial shipbuilding companies
- Military and naval shipyards
- Marine repair and maintenance firms
- Offshore platform construction contractors
- Specialized marine fabrication shops
- Government-owned or operated shipyards
Subcategories for NAICS 336611
- 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
Government Buyers for NAICS 336611
Government agencies such as the U.S. Navy, U.S. Coast Guard, Maritime Administration (MARAD), and the Department of Energy regularly procure shipbuilding and repair services. The defense sector relies heavily on these establishments for constructing and maintaining military vessels including submarines and aircraft carriers. Civil agencies contract for commercial vessel construction and repair to support logistics, offshore energy platforms, and emergency response fleets. These contracts ensure operational readiness, technological advancement, and compliance with safety and environmental regulations in critical maritime infrastructure.
Contract Types & Procurement for NAICS 336611
Contracts awarded under NAICS 336611 commonly include firm-fixed-price, cost-plus-fixed-fee, and indefinite delivery/indefinite quantity (IDIQ) contracts. Procurement methods range from competitive bidding to negotiated contracts, particularly for complex military vessels. Contract values vary widely, from smaller repair and conversion projects in the hundreds of thousands of dollars to multi-billion-dollar new ship construction programs. Long-term contracts and multi-phase procurements are prevalent due to the complexity and duration of shipbuilding projects.
Details for NAICS 336611
Explore the hierarchy and related codes for this industry
| NAICS Code | Industry Title |
|---|---|
| 33661 | Ship and Boat Building |
| 3366 | Ship and Boat Building |
| 336 | Transportation Equipment Manufacturing |
| NAICS Code | Industry Title |
|---|---|
| 336612 | Boat Building |
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