Establishments primarily engaged in building and repairing ships, barges, and lighters, whether self-propelled or towed by other craft. This industry also includes the conversion and alteration of ships and the manufacture of off-shore oil and gas well drilling and production platforms (whether or not self-propelled). Establishments primarily engaged in fabricating structural assemblies or components for ships, or subcontractors engaged in ship painting, joinery, carpentry work, and electrical wiring installation, are classified in other industries.

• Barges, building and repairing
• Cargo vessels, building and repairing
• Combat ships, building and repairing
• Crew boats, building and repairing
• Dredges, building and repairing
• Drilling and production platforms, floating, oil and gas
• Drydocks, floating
• Ferryboats, building and repairing
• Fireboats, building and repairing
• Fishing vessels, large: seiners and trawlers-building and repairing
• Hydrofoil vessels
• Landing ships, building and repairing
• Lighters, marine: building and repairing
• Lighthouse tenders, building and repairing
• Marine rigging
• Naval ships, building and repairing
• Offshore supply boats, building and repairing
• Passenger-cargo vessels, building and repairing
• Patrol boats, building and repairing
• Radar towers, floating
• Sailing vessels, commercial: building and repairing
• Scows, building and repairing
• Seiners, building and repairing
• Shipbuilding and repairing
• Submarine tenders, building and repairing
• Tankers (ships), building and repairing
• Tenders (ships), building and repairing
• Towboats, building and repairing
• Transport vessels, passenger and troop: building and repairing
• Trawlers, building and repairing
• Tugboats, building and repairing