Company lists · Data refreshed September 2026

Top 25 Ocean engineering firms based in France

RevenueBase identified 126 company matches for ocean engineering firms associated with France as of September 2026 and tracks 7,231 professional contacts across them, including 2,116 with verified work emails. Lorient is the largest hub.

This list covers company matches for ocean engineering firms associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built
126Companies
7,231Contacts tracked
2,116Verified emails
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The 25 largest ocean engineering firms based in France

Ranked by team size
Top 25 of 126 company matches for ocean engineering firms based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSaint-nazaire, FranceHQ recorded Sep 17, 20261,001-5,0002,004 contacts →

Exact match

“Installée sur la façade Atlantique, Chantiers de l’Atlantique est une entreprise de construction maritime (paquebots, sous-stations…) et de services aux flottes.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2Exact matchFranceHQ recorded Sep 17, 20265,001-10,0001,829 contacts →

Exact match

“The Ponticelli Frères Group is one of the main European service suppliers to companies in the energy (oil and gas, nuclear, renewable energy), industrial (chemical, steelworks…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3Exact matchLe Havre, FranceHQ recorded Sep 17, 20261,001-5,000718 contacts →

Exact match

“Building on its industrial heritage, its strong ties to the Snef Group, and its commitment to innovation, Fouré Lagadec continues to evolve to meet the technical and energy…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4Exact matchCassis, FranceHQ recorded Sep 17, 2026n/a216 contacts →

Exact match

“GEOCEAN is a marine work contractor, based near Marseille, in the south of France, with 30 years experience worldwide.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5Exact matchLa Rochelle, FranceHQ recorded Sep 17, 202651-20090 contacts →

Exact match

“Notre expertise au service des océans et des littoraux : Notre bureau d'études accompagne les projets sur l’ensemble du littoral français et à l’international, avec une expertise…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6Exact matchNîmes, FranceHQ recorded Sep 17, 202651-20081 contacts →

Exact match

“Created in 1983, STAT MARINE is an entrepreneurial and client-focused organisation; it has won its reputation not only for its practical approach to operational and engineering…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7Exact matchKervignac, FranceHQ recorded Sep 17, 202611-5049 contacts →

Exact match

“Hydroconsult is a recognized actor in worldwide Hydrographic and Geophysical Survey's assistance and Marine Consulting, with 20 years experience.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8Exact matchPerols, FranceHQ recorded Sep 17, 202611-5028 contacts →

Exact match

“Ingénierie et services subaquatiques robotisés.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9Exact matchGuérande, FranceHQ recorded Sep 17, 202611-5025 contacts →

Exact match

“GEPS Techno builds and operates autonomous, connected offshore platforms serving as persistent floating infrastructure for maritime monitoring & surveillance, along with other…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10Exact matchL'haÿ-les-roses, FranceHQ recorded Sep 17, 202611-5025 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11Exact matchSix Fours Les Plages, FranceHQ recorded Sep 17, 202611-5019 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12Exact matchValbonne, FranceHQ recorded Sep 17, 202611-5014 contacts →

Exact match

“With over 30 years of expertise, Rivoyre Ingénierie excels in the calculation of composite and aluminum structures for leisure maritime construction.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13Exact matchBruz, FranceHQ recorded Sep 17, 202611-5013 contacts →

Exact match

“IDRA BIO ET LITTORAL is an oceanography services company based out of LA HAYE DE PAN, BRUZ, France.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14Exact matchLe Trait, FranceHQ recorded Sep 17, 202611-5013 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15Exact matchSaint-cloud, FranceHQ recorded Sep 17, 20261-1013 contacts →

Exact match

“DV Offshore’s expertise includes floating systems, terminals, mooring systems, floating wind turbines, subsea production, pipelines & risers, allowing us to provide technical and…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16Exact matchGondreville, FranceHQ recorded Sep 17, 202611-5013 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17Exact matchLa Seyne Sur Mer, FranceHQ recorded Sep 17, 202611-5012 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18Exact matchBrest, FranceHQ recorded Sep 17, 202611-5012 contacts →

Exact match

“Depuis plus de 20 ans, Actimar apporte son expertise au service de la mer.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19Exact matchSt-Nazaire, FranceHQ recorded Sep 17, 20261-1012 contacts →

Exact match

“Kappa Offshore Solutions is a marine engineering company specialized in offshore seismic data acquisition.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20Exact matchBiot, FranceHQ recorded Sep 17, 202611-5011 contacts →

Exact match

“The company specializes in maritime, river and coastal engineering.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21Exact matchBordeaux, FranceHQ recorded Sep 17, 20261-1011 contacts →

Exact match

“Énergie de la Lune est un cabinet d'ingénierie spécialisé en Énergies Marines Renouvelables et en génie océanographique.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22Exact matchTalmont-saint-hilaire, FranceHQ recorded Sep 17, 20261-108 contacts →

Exact match

“ICEO - Ingénierie, Conseil, Expertise dans le domaine de l'eau est un bureau d'études spécialisé dans le domaine des milieux aquatiques et l'environnement littoral.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23Exact matchClermont Ferrand, FranceHQ recorded Sep 17, 202611-508 contacts →

Exact match

“ATHOS Environnement est une entreprise spécialisée dans l’ingénierie des milieux aquatiques située en plein cœur de l’Auvergne, à Clermont-Ferrand.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24Exact matchNantes, FranceHQ recorded Sep 17, 20261-108 contacts →

Exact match

“Agence d'architectes navals pour la plaisance et les professionnels.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25Exact matchNice, FranceHQ recorded Sep 17, 20261-108 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 25 of 126 ocean engineering firms based in France

See the full list, filter by size, metro and specialty, and access 2,116 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ocean engineering firms based in France at a glance

As of Sep 17, 2026
29.3%Verified-email coverage
57.4Average contacts per company
1-10Median size (employees)
4.8%Largest-city concentration · Lorient
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
76
11-50
32
51-200
6
201-500
2
501-1,000
4
1,001-5,000
4
5,001-10,000
1

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 126 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with France whose business descriptions match “ocean engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,116 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ocean engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ocean engineering firms are there based in France?

RevenueBase identified 126 company matches for ocean engineering firms associated with France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Chantiers DE L'atlantique tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most ocean engineering firms?

Lorient leads with 6 company records, followed by Marseille (5) and Nice (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,116 professional contacts with verified work emails tracked across these 126 companies; direct dials are available where recorded.

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 SmartSearch, 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.