Company lists · Data refreshed November 2026

Top 25 Offshore maintenance contractors based in Spain

RevenueBase identified 112 company matches for offshore maintenance contractors associated with Spain as of November 2026 and tracks 3,198 professional contacts across them, including 328 with verified work emails. Algeciras is the largest hub.

This list covers company matches for offshore maintenance contractors 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
112Companies
3,198Contacts tracked
328Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest offshore maintenance contractors based in Spain

Ranked by team size
Top 25 of 112 company matches for offshore maintenance contractors 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 matchMadrid, SpainHQ recorded Nov 6, 20261,001-5,000528 contacts →

Exact match

“MASA interviene en toda la cadena de actividades en la vida de las instalaciones e infraestructuras, desde su fase de proyecto, hasta la construcción y montaje de la instalación…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Nov 6, 2026501-1,000478 contacts →

Exact match

“Empresa de referencia del Grupo Cobra especializada en diseño, ingeniería, instalaciones y montajes mecánicos y eléctricos y mantenimiento industrial.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchErandio, SpainHQ recorded Nov 6, 20261,001-5,000305 contacts →

Exact match

“At KAEFER, we are your strategic partner for integrated industrial maintenance solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchValladolid, SpainHQ recorded Nov 6, 2026201-500156 contacts →

Exact match

“Altertec es una empresa líder de mantenimiento integral del sector eólico que nace en 2004 con el objetivo de dar respuestas a las necesidades del sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLas Palmas Of Gran Canaria, SpainHQ recorded Nov 6, 2026201-500125 contacts →

Exact match

“Astilleros Canarios S.A.(Astican) is a leading privately owned ship repair yard, offering comprehensive repair, maintenance, and conversion services for all types of vessels…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNaron, SpainHQ recorded Nov 6, 2026501-1,000107 contacts →

Exact match

“Empresa dedicada al mantenimiento Naval desde hace 40 años, especialista en, preparacion de superficies y pintado de buques, tratamiento de casco y TANKCOATING.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPuerto Real, SpainHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“Tincasur Sur es una empresa de servicios con una gran experiencia en los campos Naval, Industrial y OffShore, contando con dos divisiones, una dedicada a la Mecánica y otra a la…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchGijón, SpainHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“Asistencia Total en Mantenimiento España S.L.U.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Opex Energy is an engineering and technical assistance company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLos Barrios, SpainHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Blay Marine Tech SL offers technical marine services and ship repairs as well as auxiliary services for the maritime industry in Spain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMazagón, SpainHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“AMADESAM S.L is a maritime service company based out of Mazagón-Huelva, Spain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCádiz, SpainHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Naval Sector - Ship berths and moorings- Crane Service- Assembly and disassembly of scaffolding (Layher system)- Ship cleaning- Maneuvers of large tonnage parts (change of axles…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPalma De Mallorca, SpainHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Heavy Seas offers a comprehensive service for the marine sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchParets, SpainHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“La experiencia familiar de más de 30 años en el sector de las instalaciones petroleras, nos llevó a crear en 1998 Fort Instalaciones Petroleras, una empresa de servicios en el…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAlgeciras, SpainHQ recorded Nov 6, 2026201-50012 contacts →

Exact match

“Innovative, Safe, Operational 24/7, Efficient, Adaptable, High Technical Quality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSanta Cruz De Tenerife, SpainHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“At Hidramar International we help to avoid downtimes to our clients providing cost-effective and safe high-quality assets maintenance in the Atlantic Ocean while they keep…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAlgeciras, SpainHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“WORKBOAT SERVICES Our fleet services are rendered from the Ports of Algeciras, Tarifa, Ceuta (Spain) and Tanger Med (Morocco) at anchorages in Algeciras and Ceuta Bay or Tanger…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Amarre y desamarre de buques en el puerto de Barcelona, y otros servicios técnico-náuticos como balizamientos, remolques, traslados de tripulación, entrega de provisiones y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLa Coruña, SpainHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Somos una compañía española fundada hace más de un siglo expertos en la prestación de servicios de la industria marítima y portuaria Ofrecemos soluciones integrales a todo tipo de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAndratx, SpainHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Tot Nautic es una empresa de mantenimiento de embarcaciones con base en Mallorca, operando en el sector náutico desde 1978.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchRubí, SpainHQ recorded Nov 6, 202611-507 contacts →

Exact match

“En ANMAR llevamos más de cuatro décadas resolviendo retos mecánicos para la industria.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLos Barrios, SpainHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Global Underwater Services SL is a professional commercial local diving company with more than 25 years of experience providing underwater maintenance services and repairs with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLos Barrios, SpainHQ recorded Nov 6, 202611-506 contacts →

Exact match

“CROSSCOMAR is an internationally managed company situated in Algeciras, SPAIN.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchAlgeciras, SpainHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Reparaciones Maritimas Españolas SA In 1989 a group of professional engineers from the merchant marine got together with the philosophy: Total quality in the job.”

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

Showing 25 of 112 offshore maintenance contractors based in Spain

See the full list, filter by size, metro and specialty, and access 328 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Offshore maintenance contractors based in Spain at a glance

As of Nov 6, 2026
10.3%Verified-email coverage
28.6Average contacts per company
11-50Median size (employees)
8.9%Largest-city concentration · Algeciras
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
44
51-200
20
201-500
5
501-1,000
3
1,001-5,000
2

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 112 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 “offshore maintenance contractors” 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 328 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 “offshore maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore maintenance contractors are there based in Spain?

RevenueBase identified 112 company matches for offshore maintenance contractors 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?

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

Which city has the most offshore maintenance contractors?

Algeciras leads with 10 company records, followed by Madrid (9) and Barcelona (6).

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 328 professional contacts with verified work emails tracked across these 112 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.

Ready to reach these companies? Verified emails and direct dials for all 112 offshore maintenance contractors based in Spain. Start with a free account, no credit card.

Download this list →

Related lists

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.