Company lists · Data refreshed September 2026

Top 25 Marine engineering companies based in France

Name: Marine engineering companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 145 companies tracked

RevenueBase identified 145 marine engineering companies headquartered in France as of September 2026 and tracks 4,680 professional contacts across them, including 1,410 with verified work emails. Marseille is the largest hub.

This list covers marine engineering companies headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

145Companies

4,680Contacts tracked

1,410Verified emails

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The 25 largest marine engineering companies based in France

Ranked by team size

Top 25 of 145 marine engineering companies based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine engineering companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Chantiers DE L'atlantique	Partial evidence	Saint-nazaire, FranceHQ checked Sep 17, 2026	1,001-5,000	2,004 contacts →
	Partial evidence “Installée sur la façade Atlantique, Chantiers de l’Atlantique est une entreprise de construction maritime (paquebots, sous-stations…) et de services aux flottes.” Source: RevenueBase Database · checked Sep 17, 2026
2	Chantier Naval Couach - CNC	Indirect evidence	Gujan-mestras, FranceHQ checked Sep 17, 2026	201-500	213 contacts →
	Indirect evidence “Couach est un acteur pionnier dans la construction de navires professionnels et de plaisance, comme dans les services navals.” Source: RevenueBase Database · checked Sep 17, 2026
3	Baudouin	Partial evidence	Cassis, FranceHQ checked Sep 17, 2026	51-200	178 contacts →
	Partial evidence “For 100 years, Moteurs Baudouin has manufactured the highest quality engines for marine and power generation applications.” Source: RevenueBase Database · checked Sep 17, 2026
4	SUD Moteurs	Indirect evidence	Marseille, FranceHQ checked Sep 17, 2026	51-200	40 contacts →
	Indirect evidence “Fondée en 1994, Sud Moteurs Groupe est une société française de réparation navale composée de 3 filiales - Sud Moteurs Marseille, avec 3 ateliers de mécanique situés à Marseille…” Source: RevenueBase Database · checked Sep 17, 2026
5	Socarenam	Indirect evidence	Boulogne-sur-mer, FranceHQ checked Sep 17, 2026	201-500	40 contacts →
	Indirect evidence “D’une réputation acquise depuis près de 60 années d’expérience au service d’une clientèle exigeante, SOCARENAM s’adapte en permanence pour répondre aux besoins spécifiques des…” Source: RevenueBase Database · checked Sep 17, 2026
6	Kent Marine Equipment	Partial evidence	Saint-herblain, FranceHQ checked Sep 17, 2026	51-200	39 contacts →
	Partial evidence “Depuis 1974, Kent Marine Equipment accompagne les professionnels du naval et du fluvial.” Source: RevenueBase Database · checked Sep 17, 2026
7	MACOR	Indirect evidence	Marseille, FranceHQ checked Sep 17, 2026	11-50	36 contacts →
	Indirect evidence “MACOR is a company specializing in ship repair and maintenance for 40 years.” Source: RevenueBase Database · checked Sep 17, 2026
8	AMM	Partial evidence	Marseille, FranceHQ checked Sep 17, 2026	11-50	33 contacts →
	Partial evidence “4 companies, 4 fields of expertise, grouped in one place AMM Automation, Measurement, Maintenance (1985) AMM Marine Electricity (2012) AMM Control Command (2016) EMR Electric…” Source: RevenueBase Database · checked Sep 17, 2026
9	Foure Lagadec Marine	Partial evidence	Le Havre, FranceHQ checked Sep 17, 2026	1,001-5,000	27 contacts →
	Partial evidence “Héritier du savoir-faire d’ACH Engineering, l’entreprise a évolué au travers de son activité de maintenance des équipements livrés.” Source: RevenueBase Database · checked Sep 17, 2026
10	Atlantic Propulsion Service	Indirect evidence	St Brevin Les Pins, FranceHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Atlantic Propulsion Service is a company based in France near the Atlantic Coast close to Saint Nazaire.” Source: RevenueBase Database · checked Sep 17, 2026
11	Mareal	Partial evidence	L'haÿ-les-roses, FranceHQ checked Sep 17, 2026	11-50	25 contacts →
	Partial evidence “Mareal: Engineering the Future of Offshore Innovation Since its inception in 2002, Mareal has established itself as a leading force in offshore engineering, spanning the entire…” Source: RevenueBase Database · checked Sep 17, 2026
12	D2m Engineering	Partial evidence	Six Fours Les Plages, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “At d2m, our expert team of marine engineers, naval architects, and offshore contractors have been committed to crafting innovative solutions for complex maritime projects for over…” Source: RevenueBase Database · checked Sep 17, 2026
13	Gwen Service	Partial evidence	Les Sables D'olonne, FranceHQ checked Sep 17, 2026	11-50	17 contacts →
	Partial evidence “Basée aux Sables d’Olonne en Vendée, GWEN MARINE SERVICE, Centre VOLVO PENTA, est spécialisé dans la maintenance et la réparation navale, ainsi que la vente de moteur.” Source: RevenueBase Database · checked Sep 17, 2026
14	AJ Marine	Partial evidence	Valbonne, FranceHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “AJ Marine, an official Caterpillar AMD, are experienced, quick response marine engineers that can attend to your yacht anywhere, anytime.” Source: RevenueBase Database · checked Sep 17, 2026
15	France Helices S.A.S	Partial evidence	Cannes, FranceHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “FRANCE HELICES manufacture and repair marine propulsion systems since 1977 in FRANCE.” Source: RevenueBase Database · checked Sep 17, 2026
16	Lecamus	Indirect evidence	La Rochelle, FranceHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “LECAMUS a une activité principale de réparation et de construction navale.” Source: RevenueBase Database · checked Sep 17, 2026
17	SRA Moteurs	Partial evidence	Nantes, FranceHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Fondée en 1991 à Nantes (Loire-Atlantique), SRA est une entreprise de FÉTIS Group spécialisée dans les solutions de propulsion marine et industrielle.” Source: RevenueBase Database · checked Sep 17, 2026
18	Kappa Offshore Solutions	Strong evidence	St-Nazaire, FranceHQ checked Sep 17, 2026	1-10	12 contacts →
	Strong evidence “Kappa Offshore Solutions is a marine engineering company specialized in offshore seismic data acquisition.” Source: RevenueBase Database · checked Sep 17, 2026
19	Seanergy	Indirect evidence	Toulon, FranceHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Trained since over 18 years, our highly qualified engineers can assist you to cover all your maintenance requirements, solve electronic or mechanical problems or even completely…” Source: RevenueBase Database · checked Sep 17, 2026
20	Stirling Design International	Indirect evidence	Nantes, FranceHQ checked Sep 17, 2026	1-10	10 contacts →
	Indirect evidence “Stirling Design International, design and naval architecture office based in Nantes, France, has specialized in detailled design and project management for inland and seagoing…” Source: RevenueBase Database · checked Sep 17, 2026
21	SUD Diesel Marine	Partial evidence	Carros Cedex, FranceHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “For over 20 years, Sud Diesel Marine has been serving in the maritime industry offering a range of services from maintenance to repair of your motorboats.” Source: RevenueBase Database · checked Sep 17, 2026
22	NPS Yachting	Indirect evidence	Antibes, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Since the 1st of January 2022 NPS Yachting is 100% focused on service and solutions for seagoing vessel.” Source: RevenueBase Database · checked Sep 17, 2026
23	DB Moteurs Volvo Penta Center	Partial evidence	Dunkerque, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “La société DB Moteurs, à Dunkerque, est spécialisée dans - la vente et la réparation de moteurs thermiques pour les marchés de la Marine, de l'Industrie et du monde Agricole…” Source: RevenueBase Database · checked Sep 17, 2026
24	Breakingwave Services	Strong evidence	La Ciotat, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Strong evidence “Breakingwave Services is providing engineering services in marine engineering and naval architecture with a strong focus on- Naval Architecture: Stability, Inclining test…” Source: RevenueBase Database · checked Sep 17, 2026
25	Oppy International	Partial evidence	Nantes, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Oppy International is a consulting firm specializing in marine projects, focusing on naval systems, maritime infrastructure, and floating structures across Europe, Canada, and…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: marine engineering companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names marine engineering companies.
Partial evidence: Its own public description names part of marine engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine engineering companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 145 marine engineering companies based in France

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Marine engineering companies based in France at a glance

As of Sep 17, 2026

30.1%Verified-email coverage

32.3Average contacts per company

1-10Median size (employees)

8.3%Largest-city concentration · Marseille

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 145 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marine engineering companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “marine engineering companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names marine engineering companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among marine engineering companies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,410 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names marine engineering companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many marine engineering companies are there based in France?

RevenueBase identified 145 marine engineering companies headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Chantiers DE L'atlantique, headquartered in Saint-Nazaire, tops this list with the largest team on record.

Which city has the most marine engineering companies?

Marseille leads with 12 headquartered companies, followed by Lorient (5) and Nantes (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,410 verified decision-maker contacts tracked across these 145 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.