Company lists · Data refreshed September 2026

Top 25 Offshore platform engineering services based in France

RevenueBase identified 75 offshore platform engineering services headquartered in France as of September 2026 and tracks 10,338 professional contacts across them, including 3,378 with verified work emails. Paris is the largest hub.

This list covers offshore platform engineering services 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 29, 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 29, 2026 86% judged on-target in blind review
75Companies
10,338Contacts tracked
3,378Verified emails
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The 25 largest offshore platform engineering services based in France

Ranked by team size
Top 25 of 75 offshore platform engineering services based in France, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to offshore platform engineering services: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSaint-nazaire, FranceHQ checked Sep 29, 20261,001-5,0002,004 contacts →

Indirect 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 29, 2026
2Indirect evidenceFranceHQ checked Sep 29, 20265,001-10,0001,829 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceLyon Cedex 07, FranceHQ checked Sep 29, 20261,001-5,0001,502 contacts →

Indirect evidence

“Welcome to Ekium!”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceLe Havre, FranceHQ checked Sep 29, 20261,001-5,000718 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceSauvelade, FranceHQ checked Sep 29, 20261,001-5,000518 contacts →

Partial evidence

“Established in 1995 in France, 3C Metal Group is a recognized leader in providing sophisticated engineering services to the oil and gas, green technology, renewable energy, power…”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceSaint-herblain, FranceHQ checked Sep 29, 2026201-500341 contacts →

Indirect evidence

“Atlantic Ingénierie, l’énergie d’avancer ensemble Chez Atlantic Ingénierie, nous avons une conviction : les projets d’énergie et d’industrie avancent mieux quand on allie…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceColombes, FranceHQ checked Sep 29, 20261,001-5,000240 contacts →

Indirect evidence

“SPECIALISED ACTIVITIES & EPC CONTRACTOR FOR THE ENERGY INDUSTRY International Contractor for design, construction and operating of production, transport and storage…”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceCassis, FranceHQ checked Sep 29, 2026n/a216 contacts →

Indirect 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 29, 2026
9Indirect evidenceParis, FranceHQ checked Sep 29, 2026201-500176 contacts →

Indirect evidence

“Aventa empowers the Marine Energy market with the sharpest skills to help design a bluer future.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceLouveciennes, FranceHQ checked Sep 29, 202651-200110 contacts →

Indirect evidence

“Since 1992 ITP Interpipe, based in Paris and Houston, has specialized in the design, provision and fabrication of highly insulated pipelines.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceNîmes, FranceHQ checked Sep 29, 202651-20081 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
12Strong evidenceGuérande, FranceHQ checked Sep 29, 202611-5025 contacts →

Strong 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 29, 2026
13Strong evidenceL'haÿ-les-roses, FranceHQ checked Sep 29, 202611-5025 contacts →

Strong 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 29, 2026
14Partial evidenceSix Fours Les Plages, FranceHQ checked Sep 29, 202611-5019 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 29, 2026
15Indirect evidenceLe Trait, FranceHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceSaint-cloud, FranceHQ checked Sep 29, 20261-1013 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceGondreville, FranceHQ checked Sep 29, 202611-5013 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 29, 2026
18Strong evidenceSt-Nazaire, FranceHQ checked Sep 29, 20261-1012 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
19Strong evidenceNice, FranceHQ checked Sep 29, 20261-108 contacts →

Strong 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 29, 2026
20Indirect evidenceNantes, FranceHQ checked Sep 29, 20261-108 contacts →

Indirect 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 29, 2026
21Indirect evidenceMontpellier, FranceHQ checked Sep 29, 202611-507 contacts →

Indirect evidence

“NOVAWELL provides subsea technologies and services to the oil and gas industry, including pre-commissioning, inspection, maintenance and repair of subsea umbilicals, risers…”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceAix En Provence, FranceHQ checked Sep 29, 2026201-5007 contacts →

Partial evidence

“Operating a modern fleet of vessels with highly qualified and seasoned personnel, Jifmar provides assistance to - Offshore Wind Farm Operators - Tidal and Wave Farm Operators -…”

Source: RevenueBase Database · checked Sep 29, 2026
23Strong evidenceLorient, FranceHQ checked Sep 29, 20261-106 contacts →

Strong evidence

“WINDGLAZ performs engineering studies in the field of offshore and floating wind energy.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceBidart, FranceHQ checked Sep 29, 202651-2005 contacts →

Partial evidence

“KRAKEN is a French engineering company providing Subsea Cables Solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceHinx, FranceHQ checked Sep 29, 202611-504 contacts →

Indirect evidence

“Bureau d'études spécialisé dans l'ingénierie de forages.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 75 offshore platform engineering services based in France

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Offshore platform engineering services based in France at a glance

As of Sep 29, 2026
32.7%Verified-email coverage
137.8Average contacts per company
11-50Median size (employees)
10.7%Largest-city concentration · Paris
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
16
51-200
9
201-500
5
501-1,000
2
1,001-5,000
6
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 75 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 offshore platform engineering services, 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 “offshore platform engineering services”. 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 offshore platform engineering services), 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 offshore platform engineering services, 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, 3,378 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 29, 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 offshore platform engineering services, 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 offshore platform engineering services are there based in France?

RevenueBase identified 75 offshore platform engineering services 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 offshore platform engineering services?

Paris leads with 8 headquartered companies, followed by Nice (4) and Lorient (3).

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 3,378 verified decision-maker contacts tracked across these 75 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 29, 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.