CS Marine

What CS Marine does

CS Marine LLC is a privately held, family-owned mechanical engineering and project management firm headquartered in Marinette, Wisconsin. Founded by mechanical engineers Stephanie and Steve Nabours, the company provides specialized engineering services to naval shipbuilders and defense contractors, with a primary customer relationship centered on Fincantieri Marinette Marine (FMM) and the U.S. Navy. Its core capabilities include propulsion system alignment, powertrain engineering, CNC machining, and precision measurement, applied to active naval construction programs including the Littoral Combat Ship (LCS) and the Constellation-class frigate. The firm has achieved ISO 9001 certification and operates without external investors, having been bootstrapped by its founders through periods of personal financial stress (e.g., mortgaging personal assets during COVID).

In 2020, CS Marine expanded its service scope by launching the Marinette Machine shop, adding in-house CNC machining and precision measurement capacity that verticalizes the firm into adjacent workflow steps on existing naval programs. The company markets through a modest digital footprint (LinkedIn, Facebook, Instagram, website blog) and has pursued non-dilutive growth capital via the FedEx Grant Competition. Revenue is not publicly disclosed and the customer base is effectively a single shipbuilding prime, which creates concentrated program-level exposure to FMM's LCS and Constellation-class build schedules and to U.S. Navy procurement timing.

Name

CS Marine

Legal name

CS Marine LLC

Website

https://csmarinellc.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

CS Marine LLC is a family-owned mechanical engineering firm in Marinette, Wisconsin that delivers propulsion alignment, powertrain engineering, CNC machining, and precision measurement services to Fincantieri Marinette Marine and the U.S. Navy on LCS and Constellation-class frigate programs.

Ownership category

akta.pro rank

Product category

Marine Engineering Services

NAICS

Ship Building and Repairing (336611)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro industry

PRIMARYIMAJAGAO

Project Management & Owner’s Engineering / Technical Consultancy (Spec Writing, Bid Support, Site Support)

Industrials, Manufacturing & Construction/Marine & Shipbuilding/Ship Design, Naval Architecture & Marine Engineering Services

SECONDARYIMAJAHAN

Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades)

Industrials, Manufacturing & Construction/Marine & Shipbuilding/Marine Propulsion & Power Systems (Engines, Drives, Thrusters)

SECONDARYTLAHAMAD

Engine & Mechanical Overhaul (Main/Aux Engines, Pumps, Valves, Compressors)

Transportation & Logistics/Ports, Terminals & Maritime Services/Ship Repair, Dry Docking & Marine Engineering Services

SECONDARYIMAJAGAK

Production Design & Detailed Engineering (3D CAD, Drawings, BOM, Nesting)

Industrials, Manufacturing & Construction/Marine & Shipbuilding/Ship Design, Naval Architecture & Marine Engineering Services

Keywords

• Marine engineering services
• Naval shipbuilding support
• Propulsion system alignment
• Precision measurement services
• CNC machining services

Headquarters

HQ city

Yorkville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Engineering and Technical Services: Provides certified technical specialists for powertrain engineering, precision measurement, and manufacturing process improvement services to shipyards and naval contractors

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

CS Marine LLC delivers mechanical engineering, project management, and precision measurement services to naval shipbuilders, with a focus on propulsion system alignment, powertrain engineering, and FARO laser-based precision measurement. The company also operates a CNC machine shop (Marinette Machine) to support fabrication needs, serving as a one-stop engineering partner for naval vessel construction programs including the U.S. Navy's Littoral Combat Ship and Constellation-class frigate.

Product overview

CS Marine LLC provides mechanical engineering business solutions and project management services for the marine/shipbuilding industry. The company offers a combination of powertrain engineering services, precision measurement and alignment work for naval propulsion systems, and CNC machining capabilities. Services are delivered through their core engineering team and affiliated machine shop operations (Marinette Machine), enabling them to support shipbuilding programs from measurement through design to machining.

Differentiator

Problem solved

Functional benefit

Products and services

• Mechanical Engineering Services Mechanical engineering services for naval shipbuilders, covering propulsion system alignment, powertrain engineering, and precision measurement for U.S. Navy vessel programs including the Littoral Combat Ship and Constellation-class frigate.
• Project Management Services Project management services coordinating engineering workstreams and program execution for naval shipbuilding customers, supporting timely delivery of complex vessel construction programs.
• Marinette Machine (CNC Machining Services) Machine shop service providing CNC machining and manufacturing support for CS Marine's naval shipbuilding engineering projects, enabling in-house fabrication of precision components.

Named customers2 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Fincantieri Marinette MarinecoreStrategic or Co-development PartnerCS Marine provides technical services including propulsion alignment and precision measurement for vessels built at Fincantieri Marinette Marine shipyard, including LCS and Constellation-class frigate programs. The company operates on-site at the Marinette, WI shipyard providing specialized engineering support.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Glosten: Independent naval architecture and marine engineering consultancy serving commercial and government marine clients. Comparable as a mid-sized specialist providing high-precision engineering services to marine and naval customers, with similar positioning as a niche technical services provider.
• MAR Incorporated: Mid-sized engineering services firm providing marine and industrial engineering, technical support, and logistics to the U.S. Navy and other maritime customers. Comparable as a sub-tier engineering services provider delivering specialized technical expertise into Navy shipyard environments.
• Epsilon Systems Solutions: A specialty defense/marine engineering services firm providing technical support, repair, and engineering solutions to U.S. Navy shipyards and vessels. Closely comparable to CS Marine in business model (specialized technical services for naval platforms) and customer base (Navy shipyards and prime contractors).
• Elliott Bay Design Group (EBDG): Naval architecture and marine engineering firm specializing in vessel design and engineering for commercial, ferry, and government marine operators. Comparable as a specialist engineering services firm supporting marine vessel programs with similar high-precision, technical-services business model.

Broad incumbents

• BAE Systems Ships: Major U.S. and global naval shipbuilder (destroyers, amphibious ships, combat vehicles). Comparable as a broad incumbent in naval shipbuilding where propulsion, alignment, and precision-measurement service needs are analogous to CS Marine's work at FMM.
• General Dynamics NASSCO: Major U.S. shipbuilder building auxiliary and support ships for the U.S. Navy and commercial operators. Comparable as a broad incumbent naval/commercial shipyard that relies on specialty technical services similar to those CS Marine provides to Fincantieri Marinette Marine.
• Huntington Ingalls Industries (HII): Largest U.S. military shipbuilder (carriers, submarines, amphibious ships) operating shipyards such as Ingalls and Newport News. Comparable as a broad incumbent in U.S. Navy shipbuilding and a potential expansion target for CS Marine's propulsion-alignment and precision-measurement services.
• Fincantieri Marine Systems (Fincantieri Marinette Marine): Parent entity of CS Marine's largest customer (Fincantieri Marinette Marine) and a major tier-one naval shipbuilder operating LCS and Constellation-class frigate programs. Comparable as the broad incumbent prime contractor that CS Marine's services feed into, and the dominant force shaping program economics.
• Alion Science and Technology (now part of SAIC): Large defense engineering services provider (now part of SAIC) delivering technical and engineering support to Navy and shipyard programs. Comparable as a much larger incumbent in defense engineering services, illustrating the scale-up path from sub-tier specialist to broad engineering services provider.

Emerging players

• MARINE DESIGN Dynamics: Specialty naval architecture and marine engineering firm providing engineering and design support to commercial and government marine programs. Comparable as a smaller specialist engineering services firm working on marine vessel programs with similar niche positioning to CS Marine.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/CS-Marine-LLC-2028344194120754
• LinkedInlinkedin.com/company/csmarinellc
• Instagraminstagram.com/csmarinellc

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

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