Company lists · Data refreshed September 2026

Top 20 Subsea inspection equipment companies based in France

RevenueBase identified 51 subsea inspection equipment companies headquartered in France as of September 2026 and tracks 920 professional contacts across them, including 105 with verified work emails. La Ciotat is the largest hub.

This list covers subsea inspection equipment 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 22, 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 22, 2026 86% judged on-target in blind review
51Companies
920Contacts tracked
105Verified emails
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The 20 largest subsea inspection equipment companies based in France

Ranked by team size
Top 20 of 51 subsea inspection equipment companies based in France, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsea inspection equipment 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceRousset, FranceHQ checked Sep 22, 2026201-500139 contacts →

Partial evidence

“Founded in 2015, ALSEAMAR, a subsidiary of the ALCEN Group, develops, designs, operates and maintains high-performance underwater solutions that meet the requirements of…”

Source: RevenueBase Database · checked Sep 22, 2026
2Strong evidencePlouzané, FranceHQ checked Sep 22, 202611-5035 contacts →

Strong evidence

“Mare Custos is a subsea robotics company designing and manufacturing the Seabot ROV family, inspection platforms built to return structured, georeferenced data from subsea assets…”

Source: RevenueBase Database · checked Sep 22, 2026
3Indirect evidencePerols, FranceHQ checked Sep 22, 202611-5028 contacts →

Indirect evidence

“Ingénierie et services subaquatiques robotisés.”

Source: RevenueBase Database · checked Sep 22, 2026
4Partial evidenceParis, FranceHQ checked Sep 22, 202611-5025 contacts →

Partial evidence

“Forssea Robotics is a smart ROV asset and services provider established in 2016 to increase productivity of underwater inspection and light intervention repeatable tasks.”

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceLorient, FranceHQ checked Sep 22, 202611-5025 contacts →

Indirect evidence

“SEABER is an innovative company that designs and manufactures highly reliable micro-AUVs, for research and commercial applications.”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceGuérande, FranceHQ checked Sep 22, 202611-5025 contacts →

Indirect 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 22, 2026
7Partial evidenceFeyzin, FranceHQ checked Sep 22, 202611-5020 contacts →

Partial evidence

“SUB-C MARINE est une société spécialisée dans l'inspection subaquatique par robot.”

Source: RevenueBase Database · checked Sep 22, 2026
8Indirect evidenceMarseille, FranceHQ checked Sep 22, 202611-5019 contacts →

Indirect evidence

“Delair Marine is the company behind Seasam, the world's first compact autonomous underwater drone made for professional applications.”

Source: RevenueBase Database · checked Sep 22, 2026
9Indirect evidenceMontfarville, FranceHQ checked Sep 22, 20261-1019 contacts →

Indirect evidence

“Spécialisés dans l'acquisition et le traitement de données géophysiques marines, la plongée, la recherche et le renflouement d'épaves, la société CERES répond aux besoins de ses…”

Source: RevenueBase Database · checked Sep 22, 2026
10Indirect evidenceSt-Nazaire, FranceHQ checked Sep 22, 20261-1012 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
11Strong evidenceMontpellier, FranceHQ checked Sep 22, 202611-507 contacts →

Strong 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 22, 2026
12Indirect evidenceCaudan, FranceHQ checked Sep 22, 202651-2007 contacts →

Indirect evidence

“Le groupe SEA VORIAN est dédié à la conception, la réalisation, l’intégration et à la mise en œuvre d’équipements de hautes technologies dans les environnements marins.”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceSaulce Sur Rhone, FranceHQ checked Sep 22, 202611-506 contacts →

Indirect evidence

“L'octant est spécialisé dans les opérations de maintenances et de contrôles non destructifs au service de l’industrie, particulièrement dans les secteurs naval et pétrolier.”

Source: RevenueBase Database · checked Sep 22, 2026
14Partial evidenceLa Ferté Saint Aubin, FranceHQ checked Sep 22, 20261-105 contacts →

Partial evidence

“Société Sea-View, spécialisée en prestation hydrographique et inspection sous-marine.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceVannes, FranceHQ checked Sep 22, 20261-104 contacts →

Indirect evidence

“Keo Robotics is a start-up from Vannes that develops and manufactures innovative solutions at affordable prices for the exploration of the seabed.”

Source: RevenueBase Database · checked Sep 22, 2026
16Partial evidenceToulon, FranceHQ checked Sep 22, 202611-503 contacts →

Partial evidence

“The Engineering Company EMC3, with Expertise in Control systems, Umbilicals and Operations for subsea developments, has been assisting the industry since EMC3 has performed…”

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceVendeuvre Sur Barse, FranceHQ checked Sep 22, 20261-103 contacts →

Indirect evidence

“VIDEOCLEAN is a wholesale company based out of ZONE INDUSTRIELLE BELLEVUE, VENDEUVRE SUR BARSE, France.”

Source: RevenueBase Database · checked Sep 22, 2026
18Partial evidenceFuveau, FranceHQ checked Sep 22, 2026201-5002 contacts →

Partial evidence

“Since 1979, SIMEC Technologies has been offering its expertise in the design and manufacture of subsea vehicles as well as a range of services dedicated to subsea cable works.”

Source: RevenueBase Database · checked Sep 22, 2026
19Partial evidenceAndrézieux-bouthéon, FranceHQ checked Sep 22, 20261-102 contacts →

Partial evidence

“Avec plus de 15 ans d'expérience terrain en Endoscopie industrielle & Inspection télévisuelle, dans des secteurs d'activités variés, nous sommes à même de répondre à tous vos…”

Source: RevenueBase Database · checked Sep 22, 2026
20Indirect evidenceLa Baule, FranceHQ checked Sep 22, 20261-101 contacts →

Indirect evidence

“EXPERTISES MARITIME PLAISANCE PRE-TRANSACTIONNELLE * Contrôles visuels et métrologiques de l'état du bateau pour naviguer en toute sécurité.* Contrôle de la structure, de la…”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 20 of 51 subsea inspection equipment companies based in France

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Subsea inspection equipment companies based in France at a glance

As of Sep 22, 2026
11.4%Verified-email coverage
18.0Average contacts per company
1-10Median size (employees)
3.9%Largest-city concentration · La Ciotat
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
17
51-200
2
201-500
2
501-1,000
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 51 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 subsea inspection equipment 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 “subsea inspection equipment 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 subsea inspection equipment 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 subsea inspection equipment 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, 105 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 22, 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 subsea inspection equipment 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 subsea inspection equipment companies are there based in France?

RevenueBase identified 51 subsea inspection equipment 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?

Alseamar, headquartered in France, tops this list with the largest team on record.

Which city has the most subsea inspection equipment companies?

La Ciotat leads with 2 headquartered companies, followed by Le Havre (2) and Marseille (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 105 verified decision-maker contacts tracked across these 51 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 22, 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.