Company lists · Data refreshed November 2026

Top 10 Underwater construction services based in France

RevenueBase identified 55 company matches for underwater construction services associated with France as of November 2026 and tracks 1,230 professional contacts across them, including 178 with verified work emails. La Ciotat is the largest hub.

This list covers company matches for underwater construction services associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
55Companies
1,230Contacts tracked
178Verified emails
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The 10 largest underwater construction services based in France

Ranked by team size
Top 10 of 55 company matches for underwater construction services based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCassis, FranceHQ recorded Nov 3, 2026n/a230 contacts →

Exact match

“GEOCEAN is a marine work contractor, based near Marseille, in the south of France, with 30 years experience worldwide.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchSassenage, FranceHQ recorded Nov 3, 2026201-500190 contacts →

Exact match

“HYDROKARST joins JARNIAS GROUP!”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchJanneyrias, FranceHQ recorded Nov 3, 202651-20071 contacts →

Exact match

“L’entreprise NOUVETRA, est localisée à l’Est de Lyon : Adresse : 609 chemin de Salonique 38220 JANNEYRIAS Sur ce site est regroupé l’ensemble du personnel administratif et…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchPerols, FranceHQ recorded Nov 3, 202611-5031 contacts →

Exact match

“Ingénierie et services subaquatiques robotisés.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchBellevigny, FranceHQ recorded Nov 3, 202611-5024 contacts →

Exact match

“Depuis 25 ans l'entreprise TETIS, filiale du Groupe ETPO, est spécialisée dans les domaines des travaux subaquatiques, maritimes et fluviaux.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchDagneux, FranceHQ recorded Nov 3, 202611-5023 contacts →

Exact match

“Les travaux subaquatiques sont le cœur d’intervention des scaphandriers de Satif.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchGondreville, FranceHQ recorded Nov 3, 202611-5017 contacts →

Exact match

“Voici une version resserrée, d’environ 1 750 caractères espaces compris.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchNantes, FranceHQ recorded Nov 3, 20261-108 contacts →

Exact match

“Oppy International is a consulting firm specializing in marine projects, focusing on naval systems, maritime infrastructure, and floating structures across Europe, Canada, and…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchLa Ferté Saint Aubin, FranceHQ recorded Nov 3, 20261-106 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchPoussan, FranceHQ recorded Nov 3, 20261-101 contacts →

Exact match

“Naval Industries est une entreprise leader dans le domaine de la soudure spécialisée, offrant des services de réparation et de reconditionnement pour les outils de travaux publics…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 10 of 55 underwater construction services based in France

See the full list, filter by size, metro and specialty, and access 178 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwater construction services based in France at a glance

As of Nov 3, 2026
14.5%Verified-email coverage
22.4Average contacts per company
1-10Median size (employees)
3.6%Largest-city concentration · La Ciotat
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
13
51-200
5
201-500
1
501-1,000
2

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 55 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with France whose business descriptions match “underwater construction services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 178 professional contacts with verified work emails across the full matched dataset. 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 November 3, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “underwater construction services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater construction services are there based in France?

RevenueBase identified 55 company matches for underwater construction services associated with France as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Geocean tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most underwater construction services?

La Ciotat leads with 2 company records, followed by Vallauris (2) and Angouleme (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 178 professional contacts with verified work emails tracked across these 55 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 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 SmartSearch, 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.