Company lists · Data refreshed September 2026

Top 25 Underwater mapping technology companies based in France

Name: Underwater mapping technology companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 53 companies tracked

RevenueBase identified 53 underwater mapping technology companies headquartered in France as of September 2026 and tracks 682 professional contacts across them, including 189 with verified work emails. Carquefou is the largest hub.

This list covers underwater mapping technology 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

53Companies

682Contacts tracked

189Verified emails

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The 25 largest underwater mapping technology companies based in France

Ranked by team size

Top 25 of 53 underwater mapping technology 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 underwater mapping technology 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	Alseamar	Partial evidence	Rousset, FranceHQ checked Sep 22, 2026	201-500	139 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
2	Hydroconsult Sarl	Indirect evidence	Kervignac, FranceHQ checked Sep 22, 2026	11-50	49 contacts →
	Indirect evidence “Hydroconsult is a recognized actor in worldwide Hydrographic and Geophysical Survey's assistance and Marine Consulting, with 20 years experience.” Source: RevenueBase Database · checked Sep 22, 2026
3	Watertracks	Indirect evidence	Perols, FranceHQ checked Sep 22, 2026	11-50	28 contacts →
	Indirect evidence “Ingénierie et services subaquatiques robotisés.” Source: RevenueBase Database · checked Sep 22, 2026
4	Seaber	Indirect evidence	Lorient, FranceHQ checked Sep 22, 2026	11-50	25 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
5	Marport France	Indirect evidence	Ploemeur, FranceHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Nous concevons et développons des capteurs de monitoring et de contrôle de prise des équipements de pêche, des echo-sondeurs, analyseurs de courants, et des sonars pour le monde…” Source: RevenueBase Database · checked Sep 22, 2026
6	COSMA	Indirect evidence	Nice, FranceHQ checked Sep 22, 2026	11-50	21 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 22, 2026
7	Sub-C Marine	Indirect evidence	Feyzin, FranceHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “SUB-C MARINE est une société spécialisée dans l'inspection subaquatique par robot.” Source: RevenueBase Database · checked Sep 22, 2026
8	Abyssa SAS	Strong evidence	Anglet, FranceHQ checked Sep 22, 2026	1-10	19 contacts →
	Strong evidence “ABYSSA’s work involves exploring the ocean depths (up to using Autonomous Underwater Vehicles (AUVs) to carry out high-resolution seabed mapping.” Source: RevenueBase Database · checked Sep 22, 2026
9	Delair Marine	Partial evidence	Marseille, FranceHQ checked Sep 22, 2026	11-50	19 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 22, 2026
10	CERES	Indirect evidence	Montfarville, FranceHQ checked Sep 22, 2026	1-10	19 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
11	Arkeocean	Partial evidence	Aspremont, FranceHQ checked Sep 22, 2026	11-50	18 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 22, 2026
12	Marine Tech	Indirect evidence	Six Fours Les Plages, FranceHQ checked Sep 22, 2026	1-10	17 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 22, 2026
13	IVM Technologies SAS	Indirect evidence	Marseille, FranceHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “3D modeling solutions designed to optimize and reduce cost for subsea asset inspections- Reveal the hidden and bring your asset to life At #IVMTechnologies we develop, design and…” Source: RevenueBase Database · checked Sep 22, 2026
14	Subtop	Indirect evidence	Arpajon, FranceHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Expert en géophysique marine et terrestre depuis 1994, Subtop propose une large gamme d’instruments et de solutions systèmes.” Source: RevenueBase Database · checked Sep 22, 2026
15	Setec Invivo	Indirect evidence	La Forêt-fouesnant, FranceHQ checked Sep 22, 2026	51-200	13 contacts →
	Indirect evidence “setec invivo intervient dès l’acquisition des données en mer, ce qui confère autonomie et efficacité.” Source: RevenueBase Database · checked Sep 22, 2026
16	Cadden	Partial evidence	Nantes, FranceHQ checked Sep 22, 2026	11-50	12 contacts →
	Partial evidence “Cadden has a long experience in developing precise navigation systems for marine applications, hydrographic surveying technology, motion sensors, Lidar, as well as in…” Source: RevenueBase Database · checked Sep 22, 2026
17	Geomod By Coexya	Indirect evidence	Lyon, FranceHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “Geomod by Coexya est éditeur et distributeur de logiciels dans les domaines de la géomatique terrestre et marine.” Source: RevenueBase Database · checked Sep 22, 2026
18	Kappa Offshore Solutions	Indirect evidence	St-Nazaire, FranceHQ checked Sep 22, 2026	1-10	12 contacts →
	Indirect evidence “Kappa Offshore Solutions is a marine engineering company specialized in offshore seismic data acquisition.” Source: RevenueBase Database · checked Sep 22, 2026
19	Mappem Geophysics	Indirect evidence	Saint-renan, FranceHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “MAPPEM Geophysics specializes in marine electromagnetic solutions for offshore and nearshore investigations.” Source: RevenueBase Database · checked Sep 22, 2026
20	SEA Vorian	Partial evidence	Caudan, FranceHQ checked Sep 22, 2026	51-200	7 contacts →
	Partial 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
21	Bathy Drone Solutions	Indirect evidence	Gauchin-légal, FranceHQ checked Sep 22, 2026	1-10	6 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 22, 2026
22	Sea-View	Indirect evidence	La Ferté Saint Aubin, FranceHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Société Sea-View, spécialisée en prestation hydrographique et inspection sous-marine.” Source: RevenueBase Database · checked Sep 22, 2026
23	Primegps	Indirect evidence	Carquefou, FranceHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “PrimeGPS est la division Marine de SITECH France, spécialisée dans la fourniture de matériels et logiciels pour l'hydrographie et les travaux maritimes et fluviaux.” Source: RevenueBase Database · checked Sep 22, 2026
24	ETHM	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “La société Equipements et Travaux Hydrauliques et Maritimes (ETHM) a été créée en 1972 à Paris, en France.” Source: RevenueBase Database · checked Sep 22, 2026
25	KEO Robotics	Indirect evidence	Vannes, FranceHQ checked Sep 22, 2026	1-10	4 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

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: underwater mapping technology 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 underwater mapping technology companies.
Partial evidence: Its own public description names part of underwater mapping technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name underwater mapping technology 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 53 underwater mapping technology companies based in France

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Underwater mapping technology companies based in France at a glance

As of Sep 22, 2026

27.7%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · Carquefou

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 53 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 mapping technology 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 mapping technology 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 mapping technology 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 mapping technology 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, 189 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 underwater mapping technology 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 mapping technology companies are there based in France?

RevenueBase identified 53 underwater mapping technology 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 underwater mapping technology companies?

Carquefou leads with 2 headquartered companies, followed by La Ciotat (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 189 verified decision-maker contacts tracked across these 53 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.