Federal NAICS Codes

NAICS 336611: Ship Building and Repairing

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 336611.

NAICS 336611 federal market metrics

Total obligations
$446.9B
Total awards
139,687 awards
Active obligations
$209.1B
Size standard
1,300 employees

What this NAICS covers

NAICS 336611 covers ship building and repairing, including fabrication, assembly, outfitting, overhaul, conversion, drydocking, systems installation, sea trials, and factory testing of vessels and major marine systems in shipyards or repair facilities.

Federal opportunities under 336611 typically involve delivering and sustaining government vessels through new construction, heavy repair or conversion projects, integration and acceptance testing of marine systems, sea trials, certified trials records, and yard management to restore operational readiness.

FY2025 snapshot

Obligations
$8.3B
Awards
6,321
Average award
$1.3M
Change from FY2024
-65.6%

Recent awards

Search contractors

$1,672,001

ROLLS-ROYCE SOLUTIONS AMERICA INC

US Coast Guard

PIID
70Z08526FLREP0115
PSC
J028 - MAINT/REPAIR/REBUILD OF EQUIPMENT- ENGINES, TURBINES, AND COMPONENTS

$32,500

GRAND SLAM DIESEL SERVICES LLC

US Coast Guard

PIID
70Z04026PSBPL0094
PSC
J020 - MAINT/REPAIR/REBUILD OF EQUIPMENT- SHIP AND MARINE EQUIPMENT

$140,589

LINDAHL REED, INC.

Offices, Boards and Divisions

PIID
15JA0526F00000383
PSC
R499 - SUPPORT- PROFESSIONAL: OTHER

$7,574

SPARTA INSULATION COMPANY

US Coast Guard

PIID
70Z02826PMIAM0082
PSC
J019 - MAINT/REPAIR/REBUILD OF EQUIPMENT- SHIPS, SMALL CRAFT, PONTOONS, AND FLOATING DOCKS

$3,180

E. T. GRESHAM COMPANY, INC

US Coast Guard

PIID
70Z08026PMECP0165
PSC
J020 - MAINT/REPAIR/REBUILD OF EQUIPMENT- SHIP AND MARINE EQUIPMENT

$24,640

COASTAL SEAL SERVICES, LLC

US Coast Guard

PIID
70Z04026P60592Y00
PSC
J020 - MAINT/REPAIR/REBUILD OF EQUIPMENT- SHIP AND MARINE EQUIPMENT

FAQ

What work fits NAICS 336611?
  • Construction of new commercial or small government vessels including hull assembly, structural welding, system outfitting, and trial sea-acceptance support.
  • Major refit and conversion work such as lengthening, role conversion, or installation of new mission systems requiring shipyard engineering and dry-dock capabilities.
  • Routine and emergency repair services including hull plating replacement, structural reinforcement, shaft and propeller repairs, and onboard machinery repairs.
  • Overhaul or replacement of propulsion systems and auxiliary machinery including engine room integration, alignment, and post-repair sea trials.
When is NAICS 336611 a weak fit?
  • Naval architecture and marine engineering consulting: lacks fabrication, dry-dock capability, or prime responsibility for physical construction and on-site shipyard labor.
  • Vessel crewing and maritime transportation operations: excludes crew supply, voyage management, and commercial shipping services that operate vessels rather than build or repair them.
  • Small recreational boat manufacturing or fiberglass boat production: missing large-scale shipyard infrastructure and heavy metal fabrication capabilities required for full-size vessel construction.
What solicitation language points to NAICS 336611?
  • Solicitation lists dry-dock availability, graving dock or pier access, heavy-capacity cranes, and laydown areas as minimum contractor infrastructure requirements.
  • Required labor categories include certified shipfitters, hull welders with maritime welding qualifications, marine electricians, and pipefitters experienced with shipboard systems.
  • Performance requirements reference sea trials, hull integrity testing, alignment tolerances, fuel and oil containment procedures, and adherence to maritime pollution-prevention standards.

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