CS MARINE CONSTRUCTORS, INC.

What CS MARINE CONSTRUCTORS, INC. does

CS Marine Constructors, Inc. is a Northern California-based marine construction contractor founded in 1986 by Chuck Stockon, a civil engineer. The company builds and repairs marine infrastructure — piers, wharfs, docks, dolphins, walkways, gangways, intakes, and outfalls — for enterprise clients including oil refineries, marine terminal operators, state and local agencies, and the US Coast Guard. CS Marine is a wholly-owned subsidiary of Woocheen Commercial Services, the commercial arm of Sealaska, an Alaska Native Corporation owned by approximately 25,000 Tlingit, Haida, and Tsimshian shareholders, which gives it 8(a) small business status, DOD Indian Incentive Program eligibility, and a credentialing stack (ISNetworld, PICS, Avetta, OSCA, DISA, TWIC) that pre-qualifies it for set-aside federal and refinery work.

The company's operating platform is anchored by a 4-acre paved dockside facility at Mare Island in Vallejo, California, equipped with 30-, 40-, and 100-ton yard cranes, plus a fleet of marine assets including the CSM DB Ventura (94 short-ton lifting capacity, 148-foot boom), CSM DB Carquinez (125 tons at 50-foot radius), CSM DB Mare Island, CSM DB Steadfast (30 tons at 65-foot radius), and the CSM CB 38 crane barge. Specialized equipment includes Flexifloat modular barges with optional jack-up legs, two Bardex 100-ton gripper jack skidding systems, vibratory and impact pile-driving hammers (ICE 4450, D-62, D-46, D-30, D-12), and sonar-aided debris-recovery gear for locating and recovering submerged objects. The company also provides dockside mobilization/demobilization, fabrication, sub-arc pile welding, marine demolition, salvage, and unexploded-ordnance recovery services, and maintains a California Class A General Contractor license (#507590) with $50M single / $150M aggregate bonding capacity.

Commercially, CS Marine operates a quote-based, project-by-project professional services model with no publicly disclosed pricing. Distribution is direct-to-enterprise and relationship-led; CS Marine describes itself as the preferred first-choice contractor for many Bay Area energy terminals, with multi-year contract arrangements and emergency repair capabilities. The go-to-market is supported by memberships in the Pile Driving Contractors Association, ASCE G-I, Western States Petroleum Association, Western Dredging Association, and OSHA/NASP/ASHI safety bodies. The company is currently expanding into the Long Beach area in 2023–2024 as part of a stated growth strategy and is positioning for California offshore wind port-development work tied to the state's net-zero energy initiative.

Name

CS MARINE CONSTRUCTORS, INC.

Legal name

CS Marine Constructors, Inc.

Website

https://csmarine.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

11–50 employees

Short description

CS Marine Constructors, Inc. is a Mare Island (Vallejo)-based marine construction contractor that builds and repairs piers, wharfs, and docks for refineries, terminal operators, and government agencies, operating a fleet of derrick barges and pile-driving equipment, and expanding into Southern California.

Ownership category

akta.pro rank

Product category

Marine Construction Services

NAICS

Structural Steel and Precast Concrete Contractors (23812)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Marine Piling & Deep Foundations (Jetties, Dolphins, Moorings) (IMAFAJAE)

akta.pro secondary industries

Subsea & Nearshore Civil Works (Trenching, Rock Placement, Mattressing) (IMAFAJAI), Cargo Handling & Lifting Equipment (Cranes, Derricks, Hoists) (IMAJAIAB), Marine Outfitting & Interior Refurbishment (TLAKAKAL)

Keywords

• Marine construction services
• Pile driving contractors
• Heavy lift barges
• Marine oil terminal infrastructure
• Marine demolition and salvage

Headquarters

HQ city

Vallejo

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Marine Construction Services: Project-based marine construction and repair services including pile driving, MOTEMS upgrades, concrete work, heavy lift, loading arm installation/removal, dredging, cofferdam/sheet pile installation, geotechnical drilling, pipe/cable laying, mooring hook installation. Services provided to refineries, terminal operators, state/local agencies, and US Coast Guard.
2. Dockside Services: Dockside mobilization/demobilization, fabrication, sub-arc pile welding, and storage/laydown services at their Mare Island facility
3. Demolition and Salvage Services: Marine salvage, demolition, sonar aided debris recovery, and unexploded ordinance recovery services
4. Equipment Rental: Rental of barges, cranes, and marine construction equipment based on availability

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

CS Marine Constructors, Inc. is a marine construction contractor that constructs and repairs piers, wharfs, docks, dolphins, walkways, gangways, intakes, and outfalls. The company provides pile driving, MOTEMS upgrades, heavy lift, dredging, cofferdam/sheet pile installation, geotechnical drilling, pipe/cable laying, mooring hook installation, marine demolition, sonar-aided debris recovery, and UXO recovery services. It serves refineries, terminal operators, state and local agencies, and the US Coast Guard across Northern California.

Product overview

CS Marine Constructors, Inc. is a marine construction company offering a comprehensive suite of services organized into three main categories: Marine Construction Services (including pile driving, MOTEMS upgrades, jack-up gear, heavy lift, concrete work, floating crane services, dredging, cofferdam/sheet piles, geotechnical drilling, pipe/cable laying, and mooring hook services), Dockside Services (storage/laydown, mobilization/demobilization, fabrication, and sub-arc pile welding), and Demolition Services (marine salvage, marine demolition, sonar aided debris recovery, and unexploded ordinance recovery). The company operates a fleet of specialized equipment including derrick barges (CSM DB Ventura, CSM DB Carquinez, CSM DB Mare Island, CSM DB Steadfast, CSM CB 38), various flat and hopper barges (CSM 23 through CSM 49), flexifloat barges, and construction equipment such as vibratory and impact hammers. The company is expanding to Southern California and is positioned at the forefront of California's net-zero energy initiative focused on offshore wind energy port development.

Differentiator

Problem solved

Functional benefit

Products and services

• Marine Construction Services

Quantifiable outcome

• 2022 AEU Safety Award - recognized as top 30 companies out of 1600 in the marine industry based on safety culture extending from leadership to each employee

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Sealaska (via Woocheen)coreStrategic or Co-development PartnerCS Marine is part of Woocheen Commercial Services, the business arm of Sealaska. Sealaska is owned by 25,000 Tlingit, Haida and Tsimshian shareholders with ancestral ties to Southeast Alaska. Woocheen brings together ocean-health focused businesses including marine construction, offshore/nearshore site characterization, environmental services, and data analytics.
• Gregg DrillingminorStrategic or Co-development PartnerPartner company within the Woocheen group. Gregg Drilling provides geotechnical drilling services, often partnered with CS Marine for geotechnical exploration projects using CS Marine's flexi-float barges.
• Pitcher ServicesminorStrategic or Co-development PartnerPartner company within the Woocheen group working together to address climate crisis and provide comprehensive marine services.
• Sealaska Engineering & Applied Sciences (SEAS)minorStrategic or Co-development PartnerPartner company within the Woocheen group providing engineering and applied sciences expertise to complement CS Marine's construction capabilities.
• Causeway GeotechminorStrategic or Co-development PartnerPartner company within the Woocheen group focused on geotechnical services, working with CS Marine on marine construction projects.
• DISA (Drug Intervention Services of America)minorOthersCS Marine employees are enrolled in DISA Random Drug Screening Program as part of the company's safety and drug testing programs.

Scale indicators5 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Great Lakes Dredge & Dock Corporation: Great Lakes Dredge & Dock is the largest U.S. provider of dredging services with broader coastal protection and offshore capabilities. Overlaps with CS Marine on dredging and marine construction, but operates at much larger scale and broader geographic scope.
• Kiewit Infrastructure West: Kiewit is a major North American infrastructure and marine construction contractor with pile driving, pier, and heavy-lift capabilities through its marine division. Comparable on large-scale marine scopes but operates as part of a much broader, diversified portfolio.

Direct peers

• Ballard Marine Construction: Ballard Marine Construction provides heavy civil and marine construction, including underwater construction, pier and wharf work, and dive services, primarily in the Western U.S. Comparable service mix and customer type to CS Marine.
• Pacific Pile & Marine: Pacific Pile & Marine is a Pacific Northwest marine construction and pile driving contractor serving ports, terminals, and government clients. Closely comparable service line (pile driving, docks, piers, heavy marine construction) with similar regional-mid-tier profile.
• Orion Group Holdings: Orion (formerly Orion Marine Group) provides marine construction, dredging, and specialty services to ports, terminals, and government clients across the U.S. Directly comparable in pile driving, pier/wharf/dock construction, and heavy lift; competes for many of the same federal and port contracts.
• Manson Construction Co. Manson is one of the largest U.S. marine construction and dredging contractors, with a fleet of derrick barges, crane barges, and hopper dredges serving ports, terminals, and government clients nationwide. Highly comparable service mix to CS Marine, though at significantly greater scale.
• Dutra Group: Dutra Group is a California-based marine construction, dredging, and aggregate company operating derrick barges, crane barges, and clamshell dredges along the West Coast. Directly comparable to CS Marine in scope (pile driving, pier/wharf construction, dredging, heavy lift) and regional footprint.
• Weeks Marine: Weeks Marine is a major U.S. marine construction, dredging, and tunneling contractor operating a large fleet of derrick barges and hopper dredges. Comparable to CS Marine on pile driving, wharf construction, and heavy lift, but with national reach and substantially larger fleet.

Regional players

• American Construction Co. American Construction Co. is a California-based heavy civil and marine contractor focused on bridges, ports, and waterfront infrastructure. Comparable to CS Marine on waterfront construction and pile driving, with regional California presence.
• Power Engineering Construction: Power Engineering Construction is a California-based heavy civil contractor with marine and waterfront capabilities serving refineries and terminal operators in the Bay Area. Directly comparable client base and service overlap with CS Marine.

Market position

Strengths5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/c-s-marine-constructors-inc-

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CS MARINE CONSTRUCTORS, INC.