Company lists · Data refreshed September 2026

Top 16 Underwater robotics companies based in France

RevenueBase identified 57 underwater robotics companies headquartered in France as of September 2026 and tracks 792 professional contacts across them, including 111 with verified work emails. Marseille is the largest hub.

This list covers underwater robotics 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 19, 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 19, 2026 86% judged on-target in blind review
57Companies
792Contacts tracked
111Verified emails
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The 16 largest underwater robotics companies based in France

Ranked by team size
Top 16 of 57 underwater robotics companies based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to underwater robotics 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
1Indirect evidenceParis, FranceHQ checked Sep 19, 20261,001-5,000142 contacts →

Indirect evidence

“Exail Technologies is a defense technology group delivering autonomous maritime drone systems and advanced navigation solutions for naval and defense customers operating in…”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceRousset, FranceHQ checked Sep 19, 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 19, 2026
3Partial evidencePlouzané, FranceHQ checked Sep 19, 202611-5035 contacts →

Partial 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 19, 2026
4Partial evidencePerols, FranceHQ checked Sep 19, 202611-5028 contacts →

Partial evidence

“Ingénierie et services subaquatiques robotisés.”

Source: RevenueBase Database · checked Sep 19, 2026
5Strong evidenceParis, FranceHQ checked Sep 19, 202611-5025 contacts →

Strong 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 19, 2026
6Indirect evidenceLorient, FranceHQ checked Sep 19, 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 19, 2026
7Indirect evidenceNice, FranceHQ checked Sep 19, 202611-5021 contacts →

Indirect evidence

“By industrializing the inventory & monitoring of benthic ecosystems, Cosma strives to contribute to the preservation of ocean biodiversity and security of our subsea…”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceFeyzin, FranceHQ checked Sep 19, 202611-5020 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceMarseille, FranceHQ checked Sep 19, 202611-5019 contacts →

Partial 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 19, 2026
10Partial evidenceAspremont, FranceHQ checked Sep 19, 202611-5018 contacts →

Partial evidence

“Arkeocean is a French deeptech company building autonomous underwater drone systems for maritime defense, subsea surveillance, industrial inspection, and ocean monitoring.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceSix Fours Les Plages, FranceHQ checked Sep 19, 20261-1017 contacts →

Indirect evidence

“Plus de 20 années d'expérience dans les opérations maritimes - Créée par les fondateurs de Nymphea Environnement, la société MARINE TECH propose les activités suivantes-…”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceCaudan, FranceHQ checked Sep 19, 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 19, 2026
13Indirect evidenceNantes, FranceHQ checked Sep 19, 20261-106 contacts →

Indirect evidence

“MaDfly optimize inspections and maintenance in difficult-access areas by innovation.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceGauchin-légal, FranceHQ checked Sep 19, 20261-106 contacts →

Indirect evidence

“BATHY DRONE SOLUTIONS est une entreprise qui vous propose de la bathymétrie, des prélèvements et de l'imagerie par drone aquatique et subaquatique.”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceVannes, FranceHQ checked Sep 19, 20261-104 contacts →

Partial 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 19, 2026
16Indirect evidenceFuveau, FranceHQ checked Sep 19, 2026201-5002 contacts →

Indirect 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 19, 2026

Showing 16 of 57 underwater robotics companies based in France

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Underwater robotics companies based in France at a glance

As of Sep 19, 2026
14.0%Verified-email coverage
13.9Average contacts per company
1-10Median size (employees)
5.3%Largest-city concentration · Marseille
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
18
51-200
3
201-500
3
501-1,000
1
1,001-5,000
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 57 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 underwater robotics 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 “underwater robotics 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 underwater robotics 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 underwater robotics 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, 111 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 19, 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 underwater robotics 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 underwater robotics companies are there based in France?

RevenueBase identified 57 underwater robotics 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?

Exail Technologies EPA EXA Otcqx Exalf, headquartered in Paris, tops this list with the largest team on record.

Which city has the most underwater robotics companies?

Marseille leads with 3 headquartered companies, followed by Paris (3) and La Ciotat (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 111 verified decision-maker contacts tracked across these 57 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 19, 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.