Company lists · Data refreshed November 2026

Top 14 Undersea technology companies based in Spain

RevenueBase identified 49 company matches for undersea technology companies associated with Spain as of November 2026 and tracks 808 professional contacts across them, including 135 with verified work emails. Barcelona is the largest hub.

This list covers company matches for undersea technology companies associated with Spain, 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 6, 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 6, 2026 How this list was built
49Companies
808Contacts tracked
135Verified emails
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The 14 largest undersea technology companies based in Spain

Ranked by team size
Top 14 of 49 company matches for undersea technology companies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchVigo, SpainHQ recorded Nov 6, 202651-200226 contacts →

Exact match

“ACSM is a global leading provider of subsea services with 25 years of expertise within the offshore energy industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNigrán, SpainHQ recorded Nov 6, 202651-200162 contacts →

Exact match

“At Marine Instruments we develop and manufacture highly innovative technological systems and products that drive responsible fisheries and aquaculture operations and enhance…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDerio, SpainHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Founded in 1995 in Derio (Spain), Zunibal has established itself as a benchmark in the field of innovation and the development of advanced technological solutions dedicated to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLos Barrios, SpainHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Sandvik Marine Electronics was established in 1970 as O.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Seabots is a technology company that delivers marine insights through robotics and data analytics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTelde, SpainHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“Acosta Ingeniería Marítima S.L.U.(Bluematt) se define como una empresa joven e innovadora que combina servicios subacuáticos y de buceo industrial, con servicios de ingeniería y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchColmenar, SpainHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Founded: 2007 • Headquarters: Málaga, Spain • Industry: Underwater engineering and robotics • Business lines: 1.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchVigo, SpainHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Marine Technology Ximo, Ltd.(Marexi) began its operation on March 17, 2005.It´s a dynamic company from Galicia that bases its activity on the constant research and development of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMadrid, SpainHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Digital Earth Solutions is a deep-tech startup aiming to contribute to the preservation of marine ecosystems through innovative ocean modelling solutions Our main activity areas…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGirona, SpainHQ recorded Nov 6, 20261-105 contacts →

Exact match

“PLOATECH is a marine technology consulting company that provides advanced scientific and customized engineering services focusing in the underwater domain.We specialize in remote…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBarcelona, SpainHQ recorded Nov 6, 20261-104 contacts →

Exact match

“NavCom Team, is a Spanish Company of Naval Technology, well established in the maritime sector, Founded by a Team of engineers with 20 year’s experience in marine electronics and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMunguía, SpainHQ recorded Nov 6, 202651-2004 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPontevedra, SpainHQ recorded Nov 6, 20261-103 contacts →

Exact match

“We offer new ROVS, refurbished ROVS and Pipeline Inspection Service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchValencia, SpainHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Our Company has an established background dating back to 1969, when all types of underwater operations began.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 14 of 49 undersea technology companies based in Spain

See the full list, filter by size, metro and specialty, and access 135 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Undersea technology companies based in Spain at a glance

As of Nov 6, 2026
16.7%Verified-email coverage
16.5Average contacts per company
11-50Median size (employees)
10.2%Largest-city concentration · Barcelona
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
15
51-200
8
201-500
1

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 49 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 Spain whose business descriptions match “undersea technology companies” 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 135 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 6, 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 “undersea technology companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many undersea technology companies are there based in Spain?

RevenueBase identified 49 company matches for undersea technology companies associated with Spain 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?

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

Which city has the most undersea technology companies?

Barcelona leads with 5 company records, followed by Vigo (5) and Madrid (4).

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 135 professional contacts with verified work emails tracked across these 49 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 6, 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.