Company lists · Data refreshed September 2026

Top 25 Offshore foundation contractors based in France

Name: Offshore foundation contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 62 companies tracked

RevenueBase identified 62 offshore foundation contractors headquartered in France as of September 2026 and tracks 6,166 professional contacts across them, including 1,804 with verified work emails. Grigny is the largest hub.

This list covers offshore foundation contractors 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

62Companies

6,166Contacts tracked

1,804Verified emails

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The 25 largest offshore foundation contractors based in France

Ranked by team size

Top 25 of 62 offshore foundation contractors 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 foundation contractors: 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	Indirect evidence	Saint-nazaire, FranceHQ checked Sep 17, 2026	1,001-5,000	2,004 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 17, 2026
2	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
3	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
4	Geocean	Partial evidence	Cassis, FranceHQ checked Sep 17, 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 17, 2026
5	Fayat Fondations Fayat Group	Indirect evidence	Grigny, FranceHQ checked Sep 17, 2026	501-1,000	106 contacts →
	Indirect evidence “Experts en fondations spéciales, les 600 collaborateurs Fayat Fondations mettent en œuvre au quotidien leur expertise reconnue sur une gamme complète de solutions techniques pour…” Source: RevenueBase Database · checked Sep 17, 2026
6	Soletanche Bachy International	Indirect evidence	Rueil Malmaison, FranceHQ checked Sep 17, 2026	201-500	81 contacts →
	Indirect evidence “SOLETANCHE BACHY INTERNATIONAL is a specialized ground engineering construction company based in Rueil Malmaison, France.” Source: RevenueBase Database · checked Sep 17, 2026
7	Leduc TP	Indirect evidence	Vernon, FranceHQ checked Sep 17, 2026	11-50	61 contacts →
	Indirect evidence “Battage de palplanches” Source: RevenueBase Database · checked Sep 17, 2026
8	Atlas Fondations	Partial evidence	Lezennes, FranceHQ checked Sep 17, 2026	51-200	50 contacts →
	Partial evidence “Atlas Fondations, membre du groupe Franki Foundations.” Source: RevenueBase Database · checked Sep 17, 2026
9	TEC System	Indirect evidence	Naintré, FranceHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “Tec system est concepteur et constructeur d’équipements de forage, sondage, injection, fondations et fondations spéciales à destination des acteurs des travaux du sol.” Source: RevenueBase Database · checked Sep 17, 2026
10	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
11	Pro-Fond	Strong evidence	FranceHQ checked Sep 17, 2026	51-200	28 contacts →
	Strong evidence “PRO-FOND is a leading contractor in the special works sector, renowned for its expertise and proven track record of delivering deep foundation and shoring projects.” Source: RevenueBase Database · checked Sep 17, 2026
12	Rhone Alpes Fondations	Indirect evidence	Nivolas Vermelle, FranceHQ checked Sep 17, 2026	11-50	27 contacts →
	Indirect evidence “Spécialiste des travaux de forage, vibro-fonçage, projection de béton, injection, chaudronnerie lourde, l’expertise de RHÔNE ALPES FONDATIONS s’exprime dans les domaines des…” Source: RevenueBase Database · checked Sep 17, 2026
13	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
14	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
15	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
16	Ft2s Fondations ET Travaux Spéciaux - SUD	Indirect evidence	Le Luc, FranceHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “FT2S – Fondations et Travaux Spéciaux Sud est une entreprise spécialisée dans les fondations spéciales et les travaux géotechniques.” Source: RevenueBase Database · checked Sep 17, 2026
17	Garonnaise DE Forage	Indirect evidence	Cugnaux, FranceHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Fondations spéciales, pieux, micro pieux, soutènement.” Source: RevenueBase Database · checked Sep 17, 2026
18	Armor FTS	Indirect evidence	Campbon, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Entreprise spécialisée dans les fondations profondes, Armor FTS, situé en région nantaise se tient à votre disposition pour étudier vos projets de construction et réaliser tout…” Source: RevenueBase Database · checked Sep 17, 2026
19	Ouest Fondations	Indirect evidence	Liffré, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
20	Windglaz	Partial evidence	Lorient, FranceHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “WINDGLAZ performs engineering studies in the field of offshore and floating wind energy.” Source: RevenueBase Database · checked Sep 17, 2026
21	Cazes Fondations	Partial evidence	Saint-paul-flaugnac, FranceHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “Cazes Fondations For over 70 years of experience Cazes Fondations carry out your projects of special foundations.” Source: RevenueBase Database · checked Sep 17, 2026
22	Geoz Consulting	Partial evidence	Nice, FranceHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “GeoZ Consulting is a specialized and globally focused consultancy company, offering geotechnical services and engineering project management to the offshore industry.” Source: RevenueBase Database · checked Sep 17, 2026
23	Spisea	Indirect evidence	Lyon, FranceHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “SPISEA, your expert in floating solutions.” Source: RevenueBase Database · checked Sep 17, 2026
24	G-Octopus	Partial evidence	Nanterre, FranceHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “Founded in 2001, G-Octopus is an expert provider of on-site pile testing and associated engineering services for the offshore oil & gas and renewables industries and near-shore…” Source: RevenueBase Database · checked Sep 17, 2026
25	MTTI	Indirect evidence	Londinières, FranceHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “MTTI, Maximilien Ternisien Technicien Indépendant, est une entreprise spécialisée dans la conception, la fabrication, l'entretien et la réparation d'engins de fondations spéciales…” 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 foundation contractors. 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 foundation contractors.
Partial evidence: Its own public description names part of offshore foundation contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore foundation contractors. 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 62 offshore foundation contractors based in France

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Offshore foundation contractors based in France at a glance

As of Sep 17, 2026

29.3%Verified-email coverage

99.5Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Grigny

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

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 62 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 foundation contractors, 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 foundation contractors”. 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 foundation contractors), 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 foundation contractors, 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, 1,804 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 foundation contractors, 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 foundation contractors are there based in France?

RevenueBase identified 62 offshore foundation contractors 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 foundation contractors?

Grigny leads with 3 headquartered companies, followed by Le Pontet (2) and Lyon (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 1,804 verified decision-maker contacts tracked across these 62 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.