Company lists · Data refreshed September 2026

Top 25 Marine structure engineers based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 105 companies tracked

RevenueBase identified 105 marine structure engineers headquartered in France as of September 2026 and tracks 3,629 professional contacts across them, including 1,338 with verified work emails. Paris is the largest hub.

This list covers marine structure engineers 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 20, 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 20, 2026 86% judged on-target in blind review

105Companies

3,629Contacts tracked

1,338Verified emails

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The 25 largest marine structure engineers based in France

Ranked by team size

Top 25 of 105 marine structure engineers based in France, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marine structure engineers: 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 20, 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 20, 2026
2	Geocean	Partial evidence	Cassis, FranceHQ checked Sep 20, 2026	n/a	216 contacts →
	Partial evidence “GEOCEAN is a marine work contractor, based near Marseille, in the south of France, with 30 years experience worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
3	Hydrokarst	Indirect evidence	Sassenage, FranceHQ checked Sep 20, 2026	201-500	170 contacts →
	Indirect evidence “HYDROKARST joins JARNIAS GROUP!” Source: RevenueBase Database · checked Sep 20, 2026
4	Setec Diadès	Partial evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	63 contacts →
	Partial evidence “DIADES est la société du groupe SETEC spécialisée dans le diagnostic des structures et a pour missions principales - l’ingénierie du diagnostic, de la maintenance, les études de…” Source: RevenueBase Database · checked Sep 20, 2026
5	Btps Atlantique	Partial evidence	Mérignac, FranceHQ checked Sep 20, 2026	51-200	50 contacts →
	Partial evidence “Depuis plus de 40 ans, BTPS Atlantique, entreprise de génie civil, construit, entretient, répare et renforce les structures de génie civil de toutes natures.” Source: RevenueBase Database · checked Sep 20, 2026
6	Osmoz-Ing	Partial evidence	Genay, FranceHQ checked Sep 20, 2026	11-50	33 contacts →
	Partial evidence “BET TECHNIQUE : Fluides - Économie de la construction - Structure à GENAY” Source: RevenueBase Database · checked Sep 20, 2026
7	Geps Techno	Partial evidence	Guérande, FranceHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “GEPS Techno builds and operates autonomous, connected offshore platforms serving as persistent floating infrastructure for maritime monitoring & surveillance, along with other…” Source: RevenueBase Database · checked Sep 20, 2026
8	Mareal	Partial evidence	L'haÿ-les-roses, FranceHQ checked Sep 20, 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 20, 2026
9	Hansen Marine	Partial evidence	Croissy Beaubourg, FranceHQ checked Sep 20, 2026	11-50	22 contacts →
	Partial evidence “Marina Builder.” Source: RevenueBase Database · checked Sep 20, 2026
10	Seacure - Geocorail	Strong evidence	Marseille, FranceHQ checked Sep 20, 2026	11-50	22 contacts →
	Strong evidence “Seacure lutte contre l'érosion côtière et protège les structures marines grâce à des solutions innovantes.” Source: RevenueBase Database · checked Sep 20, 2026
11	Vercheenne Travaux Hydrauliques, Maritimes ET Fluviaux	Partial evidence	Doue-en-anjou, FranceHQ checked Sep 20, 2026	51-200	20 contacts →
	Partial evidence “La société Verchéenne est une PME indépendante, qui conçoit et réalise des ouvrages ayant trait aux travaux hydrauliques, maritimes et fluviaux.” Source: RevenueBase Database · checked Sep 20, 2026
12	D2m Engineering	Strong evidence	Six Fours Les Plages, FranceHQ checked Sep 20, 2026	11-50	19 contacts →
	Strong 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 20, 2026
13	EGCEM	Partial evidence	Marseille, FranceHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “Créé à Marseille en 1974 sous le régime d’une SARL, transformé en 2018 en SAS au capital souscrit en totalité par son personnel, EGCEM est un bureau d’études de structure de Génie…” Source: RevenueBase Database · checked Sep 20, 2026
14	AJ Marine	Strong evidence	Valbonne, FranceHQ checked Sep 20, 2026	11-50	16 contacts →
	Strong 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 20, 2026
15	Rivoyre Ingénierie	Strong evidence	Valbonne, FranceHQ checked Sep 20, 2026	11-50	14 contacts →
	Strong evidence “With over 30 years of expertise, Rivoyre Ingénierie excels in the calculation of composite and aluminum structures for leisure maritime construction.” Source: RevenueBase Database · checked Sep 20, 2026
16	Lecamus	Indirect evidence	La Rochelle, FranceHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “LECAMUS a une activité principale de réparation et de construction navale.” Source: RevenueBase Database · checked Sep 20, 2026
17	TES Technifor	Indirect evidence	Gondreville, FranceHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “Aujourd’hui acteur majeur des travaux spéciaux dans tout le quart Nord Est de la France, T.E.S.(Travaux Entretien Subaquatiques) fut fondée en 1982 par Patrick CHAMPLON à Toul.” Source: RevenueBase Database · checked Sep 20, 2026
18	Oceanide	Indirect evidence	La Seyne Sur Mer, FranceHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Oceanide operates a unique combination of tests facilities in France including the BGO deep water basin (waves, wind, current), a wave flume and a shallow water wave tank.” Source: RevenueBase Database · checked Sep 20, 2026
19	Acri-In	Strong evidence	Biot, FranceHQ checked Sep 20, 2026	11-50	11 contacts →
	Strong evidence “The company specializes in maritime, river and coastal engineering.” Source: RevenueBase Database · checked Sep 20, 2026
20	Énergie DE LA Lune	Partial evidence	Bordeaux, FranceHQ checked Sep 20, 2026	1-10	11 contacts →
	Partial evidence “Énergie de la Lune est un cabinet d'ingénierie spécialisé en Énergies Marines Renouvelables et en génie océanographique.” Source: RevenueBase Database · checked Sep 20, 2026
21	Nautilus Dynamics	Partial evidence	Nice, FranceHQ checked Sep 20, 2026	1-10	8 contacts →
	Partial evidence “OFFSHORE ENGINEERING SOLUTIONS At NAUTILUS DYNAMICS, we support and provide solutions to our clients in the offshore wind, oil and gas, floating PV, ports and other coastal…” Source: RevenueBase Database · checked Sep 20, 2026
22	Breakingwave Services	Strong evidence	La Ciotat, FranceHQ checked Sep 20, 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 20, 2026
23	Oppy International	Strong evidence	Nantes, FranceHQ checked Sep 20, 2026	1-10	8 contacts →
	Strong 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 20, 2026
24	Bañulsdesign	Strong evidence	Larmor-baden, FranceHQ checked Sep 20, 2026	1-10	8 contacts →
	Strong evidence “BAÑULSDESIGN is a Naval Architecture & Maritime Engineering company developping advanced procedures and methodologies to address the new challenges of more sustainable, greener…” Source: RevenueBase Database · checked Sep 20, 2026
25	OTI Structure	Partial evidence	Lanester, FranceHQ checked Sep 20, 2026	11-50	6 contacts →
	Partial evidence “Créé en 1990, OTI est un Bureau d’Etudes spécialisé dans le calcul des structures, les calculs en phase conception, les calculs d’optimisation et les études d’exécution béton…” Source: RevenueBase Database · checked Sep 20, 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 structure engineers. 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 structure engineers.
Partial evidence: Its own public description names part of marine structure engineers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine structure engineers. 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 105 marine structure engineers based in France

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Marine structure engineers based in France at a glance

As of Sep 20, 2026

36.9%Verified-email coverage

34.6Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Paris

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 105 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 structure engineers, 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 structure engineers”. 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 structure engineers), 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 structure engineers, 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, 1,338 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 20, 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 structure engineers, 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 structure engineers are there based in France?

RevenueBase identified 105 marine structure engineers 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 structure engineers?

Paris leads with 5 headquartered companies, followed by La Rochelle (4) and Marseille (4).

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 1,338 verified decision-maker contacts tracked across these 105 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 20, 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.