California is home to numerous shipbuilding companies, spanning various specialized areas from construction to repair and maintenance. As essential contributors to the maritime industry, these companies provide services for both commercial and military sectors. Services range from structural steel and aluminium welding to diesel engine solutions found in propulsion systems. In addition to building ships, they also offer repair, maintenance, and upgrade services, ensuring ships remain seaworthy. With the ongoing technological advancements in this industry, companies are expected to evolve in their design and manufacturing techniques, ensuring efficiency and sustainability remains at the forefront of their operations.


Top 22 shipbuilding companies in California

1. NASSCO

  • Website: nassco.com
  • Headquarters: San Diego, California, United States
  • Founded: 1959
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

General Dynamics NASSCO is a shipbuilding and repair company that operates in four ports in the United States and globally. The company specializes in ship construction for both the military and commercial sectors, and offers ship repair and maintenance services.


2. Southcoast Welding & Manufacturing

Southcoast Welding & Manufacturing is a premier west coast structural steel and aluminum company that specializes in vessel repair. With a team of 900 trained professionals, they offer planning, design, execution, and management of projects of any size. They provide services such as welding, shipfitting, pipefitting, sheet metal fabrication, HVAC, electrical, and machining. As a small business founded in 2003, they serve the San Diego, CA and Norfolk, VA waterfronts and have multiple contract vehicles.


3. Maritime Schools

  • Website: mainengines.com
  • Headquarters: San Bruno, California, United States
  • Headcount: 51-200

MainEngines.com provides marine propulsion solutions using Turbocharger Technology by MAN B&W. They specialize in diesel engines and offer services related to marine power and propulsion systems for commercial and recreational vessels.


4. Bay Ship & Yacht Co.

  • Website: bay-ship.com
  • Headquarters: Alameda, California, United States
  • Founded: 1977
  • Headcount: 201-500
  • LinkedIn

Bay Ship & Yacht Co is a shipyard business that provides high-quality and well-trained craftspeople for commercial refit and repair projects. They pride themselves on customer satisfaction and offer amenities such as private offices with satellite TV and Wi-Fi. With a focus on safety and quality, they have certifications from Naval Sea Systems Command and the Society for Protective Coatings.


5. Maritime Management Consulting

Maritime Management Consulting (MMC) is a management consulting firm that provides market research & development, strategic planning, tactical planning, cost & pricing analysis, supply chain & operations improvement, program & project management, business process realignment, product development, attorney support and other business services to maritime industry.


6. Maritime Reporter &a; Engineering

NavalProfessional.com is a website that provides the latest news and information on the maritime industry including shipbuilding and marine technology.


7. Boat Construction

No relevant description of Boatconstruction.com could be found on the website text.


8. Navigator Publishing

Professional Mariner is a maritime publishing company that provides news, information, and resources to the maritime industry. It covers a wide range of topics including casualty news, industry news, tugboats & towing, licensing & training, and jobs.


9. Tri Coastal Marine Inc

Tri-Coastal Marine-Naval Architects and Marine Engineers is a company that offers ship design, building, and preservation services with a focus on historic ships.


10. Konel

  • Website: marinesatnav.com
  • Headquarters: South San Francisco, California, United States
  • Headcount: 1-10

Pepper Industries, Inc., is a well-known and respected firm in the marine tank and pipe-cleaning field. Hazardous waste disposal and industrial cleaning are included in Pepper's range of services. The company maintains bases of operations in Honolulu, Hawaii, Louisiana, Florida, the Atlantic Seaboard, California, and elsewhere.


11. Multibeam

  • Website: multi-beam.com
  • Headquarters: Santa Clara, California, United States
  • Headcount: 1-10

Multibeam is a leader in multicolumn electron-beam lithography (MEBL). With a robust IP portfolio comprising 43 patents, Multibeam is building MEBL production systems and developing applications under DOD contracts. The company targets applications such as high-mix production lithography, complementary e-beam lithography (CEBL), security lithography, and applications in which MEBL holds competitive advantages and offers compelling benefits to semiconductor chipmakers. Multibeam is led by David K. Lam, the founder and first CEO of Lam Research. Widely recognized as a key contributor to the growth of the semiconductor industry, Lam was inducted into the Silicon Valley Engineering Hall of Fame in 2013.


12. Bruce S. Rosenblatt & Associates

BSR is a third generation Naval Architecture and Marine Engineering firm that provides design, engineering, and ILS support to commercial shipyards, ship owners, government entities, and foreign countries.


13. Curtin Maritime, Corp.

Curtin Maritime is an American-owned and operated marine solutions company that provides quality maritime services for various project phases, from design to execution.


14. Pacific Maritime Group, Inc.

Pacific Maritime Group is a comprehensive maritime services company specializing in marine construction, dredging, tugboat services, and marine salvage. With a dedicated team and a fleet of specialized equipment, they provide reliable and efficient solutions for government and commercial clients.


15. Miracle Hydrate Skin Care (Official)

MH3 THE ANTI-AGING COLLECTION -Miracle Hydrate LLC, Skin care with botox alternative, Beautiful skin, Luxury skincare that's affordable, Affordable skincare


16. Pell Mell Supply INC

Pell Mell Supply Inc. is a company that offers a wide range of nuts, bolts, and fasteners to various industries such as shipbuilding, construction, and electronics.


17. Surkhaab Logistics

Surkhaab Logistics is a family-owned freight brokerage that facilitates transportation and storage of various products, including food grade products, with its temperature-controlled facilities and state-of-the-art technology. The company ensures regulatory compliance, management, and electronic logs monitoring.


18. Yyk Enterprises Inc

YYK Enterprises is a long-standing company that specializes in marine preservation and painting services. With over 40 years of experience, they are the government's exclusive choice for camouflaging the LCS Fleet. They offer a wide range of standard and specialized services, including dry docking, environmental blasting, and non-skid surface maintenance.


19. Rebuild The United States

  • Website: rbtus.com
  • Headquarters: Los Angeles, California, United States
  • Headcount: 11-50
  • LinkedIn

A grassroots campaign with a plan to create 20 million American jobs through investment in renewable energy projects, education, and revitalized infrastructure. Please join our facebook page and sign the American Jobs Contract! http://www.facebook.com/pages/Rebuild-The-United-States/190027301020233?sk=app_106878476015645&app_data=page-3


20. Move Express Corp.

  • Website: moveexpress.us
  • Headquarters: Long Beach, California, United States
  • Founded: 2015
  • Headcount: 1-10
  • LinkedIn

Move Express is a global transportation and logistics company that specializes in the overseas shipment of variety of vehicles and other cargo to almost all foreign destinations. They offer competitively priced ground and ocean shipping with expertise in customs clearance and documentation.


21. Al Larson Boat Shop, Inc.

  • Website: larsonboat.com
  • Headquarters: San Pedro, California, United States
  • Founded: 1903
  • Headcount: 51-200
  • LinkedIn

Al Larson Boat Shop is a full-service shipyard located at the entrance of Fish Harbor. With marine railways, a floating drydock, and dockside work areas, they offer hauling, repair, and maintenance services for vessels up to 1,250 tons. Their facilities include machine, welding, and carpenter shops, as well as storage areas and crew quarters.


22. D R S Marine INC

DRS Marine Inc. is a commercial diving company based in the San Francisco Bay Area, California. They provide a wide range of services including ship repair, diving services, marine construction, and emergency response. With a team of trained and qualified personnel, they offer services such as cleaning and inspecting potable water facilities, underwater welding, pile repair/inspection, and fish screens. Their goal is to complete each project safely and with excellent quality.


Want to find more shipbuilding companies?


If you want to find more companies that offer diverse, specialized services tailored to marine construction and maintenance you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


With Inven you'll also get to know the company's:


  • Ownership: Which of these are private equity backed? Which are family-owned?
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  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!