Company lists · Data refreshed September 2026

Top 25 Offshore platform maintenance services based in France

Name: Offshore platform maintenance services based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 150 companies tracked

RevenueBase identified 150 offshore platform maintenance services headquartered in France as of September 2026 and tracks 17,044 professional contacts across them, including 1,838 with verified work emails. Marseille is the largest hub.

This list covers offshore platform maintenance 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

150Companies

17,044Contacts tracked

1,838Verified emails

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The 25 largest offshore platform maintenance services based in France

Ranked by team size

Top 25 of 150 offshore platform maintenance 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 maintenance 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ortec Group	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 29, 2026	10001+	3,436 contacts →
	Indirect evidence “En conjuguant depuis sa création audace et rigueur, le groupe Ortec est devenu aujourd’hui un des leaders des services à l’industrie, l’énergie et l’environnement.” Source: RevenueBase Database · checked Sep 29, 2026
2	Altrad	Indirect evidence	Montpellier, FranceHQ checked Sep 29, 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 29, 2026
3	Groupe Ponticelli Frères	Indirect evidence	FranceHQ checked Sep 29, 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 29, 2026
4	Fives Maintenance	Partial evidence	Montévrain, FranceHQ checked Sep 29, 2026	501-1,000	416 contacts →
	Partial evidence “Spécialiste de la maintenance industrielle depuis plus de vingt ans, Fives intervient dans le cadre de contrats à obligation de résultats pour assurer la maintenance préventive…” Source: RevenueBase Database · checked Sep 29, 2026
5	Alpha Maintenance	Partial evidence	Rouen, FranceHQ checked Sep 29, 2026	201-500	265 contacts →
	Partial evidence “Alpha Maintenance is an oil and energy company based out of Avenue Auguste Marius Peyre, Port-de-Bouc, France.” Source: RevenueBase Database · checked Sep 29, 2026
6	Caroil	Indirect evidence	Pau, FranceHQ checked Sep 29, 2026	201-500	256 contacts →
	Indirect evidence “With nearly two decades of experience, Caroil is a leading Drilling & Workover rig contractor with a diverse fleet of rigs and skillful and technical workforce providing safe and…” Source: RevenueBase Database · checked Sep 29, 2026
7	Geocean	Indirect evidence	Cassis, FranceHQ checked Sep 29, 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 29, 2026
8	CNN MCO	Partial evidence	Guipavas, FranceHQ checked Sep 29, 2026	51-200	87 contacts →
	Partial evidence “OUR IDENTITY 10 years’ experience in Operational Ship Maintenance for third parties • Experienced ship-owners who are aware of and adapt to the needs of both our civil and…” Source: RevenueBase Database · checked Sep 29, 2026
9	Stat Marine	Indirect evidence	Nîmes, FranceHQ checked Sep 29, 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 29, 2026
10	Dolfines	Indirect evidence	Montigny Le Bretonneux, FranceHQ checked Sep 29, 2026	51-200	73 contacts →
	Indirect evidence “Dolfines is an independent engineering and services specialist assisting industrial clients across the energy value chain in achieving operational excellence.” Source: RevenueBase Database · checked Sep 29, 2026
11	EMIP	Indirect evidence	Nesle, FranceHQ checked Sep 29, 2026	51-200	42 contacts →
	Indirect evidence “Mécanique - Tuyauterie - Chaudronnerie - Relevé scanner laser 3D & Modélisation - Lignage & Equilibrage.” Source: RevenueBase Database · checked Sep 29, 2026
12	Drekan-Group	Indirect evidence	Beautor, FranceHQ checked Sep 29, 2026	51-200	41 contacts →
	Indirect evidence “Drekan Groupe and its various entities have nearly 90 years of experience working with rotating machinery.” Source: RevenueBase Database · checked Sep 29, 2026
13	MACOR	Partial evidence	Marseille, FranceHQ checked Sep 29, 2026	11-50	36 contacts →
	Partial evidence “MACOR is a company specializing in ship repair and maintenance for 40 years.” Source: RevenueBase Database · checked Sep 29, 2026
14	BC Maintenance Equipements Mobiles	Partial evidence	Gentilly, FranceHQ checked Sep 29, 2026	11-50	31 contacts →
	Partial evidence “Filiale du Groupe Baudin Châteauneuf, BC Maintenance a pour mission d’assurer à ses clients le suivi de leurs installations et de maintenir leur performance, leur niveau de…” Source: RevenueBase Database · checked Sep 29, 2026
15	Aextis	Indirect evidence	Nonant, FranceHQ checked Sep 29, 2026	51-200	28 contacts →
	Indirect evidence “An on-site service provider committed to delivering complete solutions to meet your operational needs.” Source: RevenueBase Database · checked Sep 29, 2026
16	Geps Techno	Strong evidence	Guérande, FranceHQ checked Sep 29, 2026	11-50	25 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
17	Mareal	Partial evidence	L'haÿ-les-roses, FranceHQ checked Sep 29, 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 29, 2026
18	Criballet	Partial evidence	Beziers, FranceHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “CRIBALLET is a mechanical or industrial engineering company, created at Béziers in 1957 with focus on precision mechanics and industrial maintenance.” Source: RevenueBase Database · checked Sep 29, 2026
19	Neotech Energy	Partial evidence	Brest, FranceHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “NEOTECH ENERGY est une entreprise spécialisée en installation et maintenance industrielle et navale.” Source: RevenueBase Database · checked Sep 29, 2026
20	AJ Marine	Indirect evidence	Valbonne, FranceHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect 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 29, 2026
21	DI Sante SAS	Indirect evidence	Gravelines, FranceHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Créée e 1991, située dans le bassin industriel du Dunkerquois, la société DI SANTE SAS est historiquement spécialisée dans les métiers de la mécanique, de la chaudronnerie et de…” Source: RevenueBase Database · checked Sep 29, 2026
22	Eurofiliales	Partial evidence	Saleilles, FranceHQ checked Sep 29, 2026	11-50	15 contacts →
	Partial evidence “Eurofiliales is specialized in the repair, maintenance and on-site installation of rotating machines.” Source: RevenueBase Database · checked Sep 29, 2026
23	ATP System SAS	Indirect evidence	La Grigonnais, FranceHQ checked Sep 29, 2026	11-50	13 contacts →
	Indirect evidence “ATP SYSTEM : Your Global Experts in Rotating Equipment Services for Unmatched Success!” Source: RevenueBase Database · checked Sep 29, 2026
24	DV Offshore	Partial evidence	Saint-cloud, FranceHQ checked Sep 29, 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 29, 2026
25	TES Technifor	Indirect evidence	Gondreville, FranceHQ checked Sep 29, 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 29, 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 platform maintenance services. 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 platform maintenance services.
Partial evidence: Its own public description names part of offshore platform maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore platform maintenance services. 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 150 offshore platform maintenance services based in France

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Offshore platform maintenance services based in France at a glance

As of Sep 29, 2026

10.8%Verified-email coverage

113.6Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · Marseille

Sep 29, 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 150 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 maintenance 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 maintenance 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 maintenance 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 maintenance 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, 1,838 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 maintenance 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 maintenance services are there based in France?

RevenueBase identified 150 offshore platform maintenance 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?

Ortec Group, headquartered in Aix-En-Provence, tops this list with the largest team on record.

Which city has the most offshore platform maintenance services?

Marseille leads with 5 headquartered companies, followed by Paris (5) and Aix-En-Provence (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 1,838 verified decision-maker contacts tracked across these 150 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.