Company lists · Data refreshed September 2026

Top 25 Marine environmental engineering companies based in Spain

Name: Marine environmental engineering companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 400 companies tracked

RevenueBase identified 400 marine environmental engineering companies headquartered in Spain as of September 2026 and tracks 4,360 professional contacts across them, including 504 with verified work emails. Madrid is the largest hub.

This list covers marine environmental engineering companies headquartered in Spain, 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 17, 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 17, 2026 86% judged on-target in blind review

400Companies

4,360Contacts tracked

504Verified emails

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The 25 largest marine environmental engineering companies based in Spain

Ranked by team size

Top 25 of 400 marine environmental engineering companies based in Spain, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental engineering 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	Amphos 21	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	201-500	418 contacts →
	Indirect evidence “Founded in 1994, in Barcelona, Spain, Amphos21 includes three companies in Spain (1994), Chile (2009) and Peru (2012).” Source: RevenueBase Database · checked Sep 17, 2026
2	Antea Group España Y Latinoamérica	Indirect evidence	A Coruña, SpainHQ checked Sep 17, 2026	51-200	133 contacts →
	Indirect evidence “Desde su fundación en A Coruña en el año 1985 ICEACSA se ha posicionado en el mercado español como una consultora pionera y líder en el desarrollo integral de proyectos en los…” Source: RevenueBase Database · checked Sep 17, 2026
3	Tecnoambiente	Partial evidence	Cerdanyola Del Vallès, SpainHQ checked Sep 17, 2026	51-200	126 contacts →
	Partial evidence “Tecnoambiente, a wholly owned subsidiary of TRADEBE, is a multidisciplinary geoscience-environmental survey, subsea inspections and environmental consultancy company, with an…” Source: RevenueBase Database · checked Sep 17, 2026
4	Abance	Partial evidence	El Puerto De Santa María, SpainHQ checked Sep 17, 2026	51-200	103 contacts →
	Partial evidence “Abance is an engineering company founded in 1994 in El Puerto de Santa María (Cádiz), Spain, that operates in the Naval and Defense sector.” Source: RevenueBase Database · checked Sep 17, 2026
5	Litoclean	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	91 contacts →
	Indirect evidence “Litoclean es una consultora medioambiental experta en el desarrollo de proyectos de investigación y descontaminación de suelos.” Source: RevenueBase Database · checked Sep 17, 2026
6	Emgrisa	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	84 contacts →
	Indirect evidence “Emgrisa es una empresa pionera en servicios y soluciones medioambientales y en economía circular.” Source: RevenueBase Database · checked Sep 17, 2026
7	Dravo S.A	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	67 contacts →
	Indirect evidence “Founded in 1987 by the the Spanish company Dragados and the Dutch company Van Oord, DRAVO S.A.” Source: RevenueBase Database · checked Sep 17, 2026
8	Tauw Iberia	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	65 contacts →
	Strong evidence “Tauw Iberia is an independent environmental consultancy and engineering company established in 1989.” Source: RevenueBase Database · checked Sep 17, 2026
9	Seaplace	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	63 contacts →
	Partial evidence “Seaplace is an Offshore Engineering and Ship Design office.” Source: RevenueBase Database · checked Sep 17, 2026
10	Tincasur Sur, S.L	Indirect evidence	Puerto Real, SpainHQ checked Sep 17, 2026	51-200	63 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
11	Freire Shipyard	Indirect evidence	Vigo, SpainHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “Freire shipyard is a family owned company located in the North West of Spain which was founded in 1895 by Mr.” Source: RevenueBase Database · checked Sep 17, 2026
12	Zunibal	Indirect evidence	Derio, SpainHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
13	Intacta Gestión Ambiental	Indirect evidence	As Pontes De García Rodríguez, SpainHQ checked Sep 17, 2026	11-50	45 contacts →
	Indirect evidence “Intacta surge como una sinergia que une la participación activa y concertada para alcanzar una eficacia total y garantizar cualquier servicio medioambiental, pero con ella nace…” Source: RevenueBase Database · checked Sep 17, 2026
14	IGM Ingenieria Y Gestión Medioambiental	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	44 contacts →
	Indirect evidence “Nuestra historia comienza en Febrero de 1997, cuando IGM es fundada para dar solución a problemas relacionados con el medio natural.” Source: RevenueBase Database · checked Sep 17, 2026
15	Detegasa	Partial evidence	Narón, SpainHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial evidence “Detegasa designs, manufactures and markets high-tech waste and water treatment solutions for Navy, Marine & Offshore Industries, providing an integrated lifecycle support.” Source: RevenueBase Database · checked Sep 17, 2026
16	Ecos Group	Strong evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 17, 2026	11-50	39 contacts →
	Strong evidence “At ECOS Group (ECOS Estudios Ambientales y Oceanografía S.L.), we are an environmental consultancy and coastal engineering firm with over 18 years of experience, specialized in…” Source: RevenueBase Database · checked Sep 17, 2026
17	Sintemar	Partial evidence	Erandio, SpainHQ checked Sep 17, 2026	11-50	37 contacts →
	Partial evidence “SINTEMAR is a company specialized in technical solutions for the installation, protection, repair and reliability of industrial and marine assets, with over 65 years of experience…” Source: RevenueBase Database · checked Sep 17, 2026
18	Siport21	Strong evidence	Las Rozas De Madrid, SpainHQ checked Sep 17, 2026	11-50	36 contacts →
	Strong evidence “Siport21 is a port engineering and maritime safety consulting company.” Source: RevenueBase Database · checked Sep 17, 2026
19	Esolve. Environmental Consulting And Engineering	Strong evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	35 contacts →
	Strong evidence “ESOLVE is an environmental consulting and engineering company that provides a wide range of professional services to private sector companies and public organizations for the…” Source: RevenueBase Database · checked Sep 17, 2026
20	SYM Naval	Indirect evidence	Puerto Vilanova I La Geltrú, SpainHQ checked Sep 17, 2026	51-200	33 contacts →
	Indirect evidence “Sym Naval is a company of naval technical services, naval consultancy and own shipyard for the construction, conversion, maintenance and repair of ships.” Source: RevenueBase Database · checked Sep 17, 2026
21	BMT Repairs	Partial evidence	Los Barrios, SpainHQ checked Sep 17, 2026	51-200	30 contacts →
	Partial evidence “Blay Marine Tech SL offers technical marine services and ship repairs as well as auxiliary services for the maritime industry in Spain.” Source: RevenueBase Database · checked Sep 17, 2026
22	Canlemar SL	Indirect evidence	Pontedeume, SpainHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence “CANLEMAR SL es una empresa ubicada en Galicia, norte de España, dedicada a la realización de dragados y obras marítimas alrededor del mundo.” Source: RevenueBase Database · checked Sep 17, 2026
23	Amadesam S.L	Partial evidence	Mazagón, SpainHQ checked Sep 17, 2026	11-50	30 contacts →
	Partial evidence “AMADESAM S.L is a maritime service company based out of Mazagón-Huelva, Spain.” Source: RevenueBase Database · checked Sep 17, 2026
24	Altácia	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	29 contacts →
	Indirect evidence “Somos un socio de confianza estratégico para nuestros clientes.” Source: RevenueBase Database · checked Sep 17, 2026
25	Extrepronatur SL	Indirect evidence	Badajoz, SpainHQ checked Sep 17, 2026	11-50	29 contacts →
	Indirect evidence “EXTREPRONATUR SL es una consultora medioambiental y servicios AVENIDA JUAN PEREDA PILA, 1, BADAJOZ, Badajoz, Spain.” Source: RevenueBase Database · checked Sep 17, 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: marine environmental engineering 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 marine environmental engineering companies.
Partial evidence: Its own public description names part of marine environmental engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental engineering 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 400 marine environmental engineering companies based in Spain

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Marine environmental engineering companies based in Spain at a glance

As of Sep 17, 2026

11.6%Verified-email coverage

10.9Average contacts per company

11-50Median size (employees)

12.8%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

192

11-50

157

51-200

201-500

501-1,000

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 400 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 marine environmental engineering 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 Spain whose own description of what they do matches “marine environmental engineering 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 marine environmental engineering 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 marine environmental engineering companies, and records with no verified work email. Companies headquartered outside Spain 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, 504 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 17, 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.

Marine environmental engineering companies by metro

Marine environmental engineering companies in Madrid51
Marine environmental engineering companies in Barcelona35

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 marine environmental engineering 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 marine environmental engineering companies are there based in Spain?

RevenueBase identified 400 marine environmental engineering companies headquartered in Spain 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?

Amphos 21, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most marine environmental engineering companies?

Madrid leads with 51 headquartered companies, followed by Barcelona (35) and Vigo (23).

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 504 verified decision-maker contacts tracked across these 400 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 17, 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.