Company lists · Data refreshed September 2026

Top 25 Offshore construction companies based in France

Name: Offshore construction 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 74 companies tracked

RevenueBase identified 74 offshore construction companies headquartered in France as of September 2026 and tracks 13,754 professional contacts across them, including 2,907 with verified work emails. Paris is the largest hub.

This list covers offshore construction 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

74Companies

13,754Contacts tracked

2,907Verified emails

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The 25 largest offshore construction companies based in France

Ranked by team size

Top 25 of 74 offshore construction 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 offshore construction 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	Altrad	Indirect evidence	Montpellier, FranceHQ checked Sep 17, 2026	10001+	3,056 contacts →
	Indirect evidence “ALTRAD AT A GLANCE Altrad is a world leader in the provision of industrial services, generating high-added value solutions principally for the Energy, Power Generation, Oil & Gas…” Source: RevenueBase Database · checked Sep 17, 2026
2	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
3	Groupe Ponticelli Frères	Indirect evidence	FranceHQ checked Sep 17, 2026	5,001-10,000	1,829 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 17, 2026
4	Foure Lagadec	Indirect evidence	Le Havre, FranceHQ checked Sep 17, 2026	1,001-5,000	718 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 17, 2026
5	3c Metal	Indirect evidence	Sauvelade, FranceHQ checked Sep 17, 2026	1,001-5,000	518 contacts →
	Indirect 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 17, 2026
6	Entrepose Group	Partial evidence	Colombes, FranceHQ checked Sep 17, 2026	1,001-5,000	240 contacts →
	Partial 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 17, 2026
7	Geocean	Indirect evidence	Cassis, FranceHQ checked Sep 17, 2026	n/a	216 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 17, 2026
8	ITP Interpipe	Indirect evidence	Louveciennes, FranceHQ checked Sep 17, 2026	51-200	110 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 17, 2026
9	Stat Marine	Indirect evidence	Nîmes, FranceHQ checked Sep 17, 2026	51-200	81 contacts →
	Indirect 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 17, 2026
10	Probent	Indirect evidence	Cherbourg En Cotentin, FranceHQ checked Sep 17, 2026	51-200	50 contacts →
	Indirect evidence “Le groupe PROBENT est un groupe industriel Normand à envergure internationale.” Source: RevenueBase Database · checked Sep 17, 2026
11	Locapal	Indirect evidence	Creil, FranceHQ checked Sep 17, 2026	51-200	45 contacts →
	Indirect evidence “Créé en 1976, Locapal est une entreprise de services et d'ingénierie, expert et leader français des ouvrages provisoires en acier de réemploi pour le génie civil, le bâtiment et…” Source: RevenueBase Database · checked Sep 17, 2026
12	Louis Dreyfus Travocean	Indirect evidence	La Ciotat, FranceHQ checked Sep 17, 2026	51-200	38 contacts →
	Indirect evidence “La Société a été créée à Marseille en 1977 pour répondre à la demande dans les travaux maritimes.” Source: RevenueBase Database · checked Sep 17, 2026
13	Gecitec	Indirect evidence	Rouvroy, FranceHQ checked Sep 17, 2026	51-200	28 contacts →
	Indirect evidence “GECITEC est une entreprise de génie civil de référence, spécialisée dans la réalisation de projets ambitieux et durables.” Source: RevenueBase Database · checked Sep 17, 2026
14	Geps Techno	Partial evidence	Guérande, FranceHQ checked Sep 17, 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 17, 2026
15	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
16	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
17	Ponticelli Prefabrication Services	Indirect evidence	Saumur, FranceHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “PPS (Ponticelli Prefabrication Services) est l'atelier de préfabrication du Groupe Ponticelli Frères Le Groupe Ponticelli Frères est l’un des principaux fournisseurs européens de…” Source: RevenueBase Database · checked Sep 17, 2026
18	Flexifrance	Indirect evidence	Le Trait, FranceHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
19	DV Offshore	Partial evidence	Saint-cloud, FranceHQ checked Sep 17, 2026	1-10	13 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 17, 2026
20	TES Technifor	Indirect evidence	Gondreville, FranceHQ checked Sep 17, 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 17, 2026
21	Kappa Offshore Solutions	Partial evidence	St-Nazaire, FranceHQ checked Sep 17, 2026	1-10	12 contacts →
	Partial evidence “Kappa Offshore Solutions is a marine engineering company specialized in offshore seismic data acquisition.” Source: RevenueBase Database · checked Sep 17, 2026
22	Nautilus Dynamics	Partial evidence	Nice, FranceHQ checked Sep 17, 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 17, 2026
23	Novawell	Indirect evidence	Montpellier, FranceHQ checked Sep 17, 2026	11-50	7 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 17, 2026
24	Jifmar Group	Partial evidence	Aix En Provence, FranceHQ checked Sep 17, 2026	201-500	7 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 17, 2026
25	Metallerie 2000	Indirect evidence	Moreuil, FranceHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Forte de 20 ans d'expérience, Métallerie est spécialisée dans la conception, la fabrication et la pose de structures métalliques sur-mesure pour l'industrie et le bâtiment.” 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: offshore construction 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 offshore construction companies.
Partial evidence: Its own public description names part of offshore construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore construction 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 74 offshore construction companies based in France

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Offshore construction companies based in France at a glance

As of Sep 17, 2026

21.1%Verified-email coverage

185.9Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 74 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 construction 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 “offshore construction 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 offshore construction 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 offshore construction 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, 2,907 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 offshore construction 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 offshore construction companies are there based in France?

RevenueBase identified 74 offshore construction 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?

Altrad, headquartered in Montpellier, tops this list with the largest team on record.

Which city has the most offshore construction companies?

Paris leads with 3 headquartered companies, followed by La Ciotat (2) and Lorient (2).

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 2,907 verified decision-maker contacts tracked across these 74 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.