Company lists · Data refreshed September 2026

Top 25 Ocean engineering firms based in Spain

Name: Ocean engineering firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 97 companies tracked

RevenueBase identified 97 ocean engineering firms headquartered in Spain as of September 2026 and tracks 2,465 professional contacts across them, including 105 with verified work emails. Madrid is the largest hub.

This list covers ocean engineering firms 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

97Companies

2,465Contacts tracked

105Verified emails

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The 25 largest ocean engineering firms based in Spain

Ranked by team size

Top 25 of 97 ocean engineering firms 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 ocean engineering firms: 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	Dragados Offshore	Indirect evidence	11510 Puerto Real, SpainHQ checked Sep 17, 2026	1,001-5,000	1,348 contacts →
	Indirect evidence “Founded in 1972, Dragados Offshore S.A.” Source: RevenueBase Database · checked Sep 17, 2026
2	ACSM	Indirect evidence	Vigo, SpainHQ checked Sep 17, 2026	51-200	208 contacts →
	Indirect evidence “ACSM is a global leading provider of subsea services with 25 years of expertise within the offshore energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	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
4	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
5	Atridel Engineering Development & Design S.L	Indirect evidence	Puerto Real, SpainHQ checked Sep 17, 2026	11-50	54 contacts →
	Indirect evidence “ATRIDEL es una empresa de ingeniería, enfocada desde sus comienzos en 2005 al sector Naval y Offshore, proporcionando soluciones de diseño y fabricación, en cada una de sus…” Source: RevenueBase Database · checked Sep 17, 2026
6	Ecos Group	Partial evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 17, 2026	11-50	39 contacts →
	Partial 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
7	SEA Master Consulting & Engineering	Partial evidence	El Puerto De Santa María, SpainHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Sea Master Consulting & Engineering es una empresa de ingeniería y consultoría naval, industrial tecnológica.” Source: RevenueBase Database · checked Sep 17, 2026
8	Siport21	Partial evidence	Las Rozas De Madrid, SpainHQ checked Sep 17, 2026	11-50	36 contacts →
	Partial evidence “Siport21 is a port engineering and maritime safety consulting company.” Source: RevenueBase Database · checked Sep 17, 2026
9	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
10	Elittoral	Indirect evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 17, 2026	11-50	28 contacts →
	Indirect evidence “elittoral S.L.N.E- Estudios de Ingeniería Costera y Oceanográfica Servicio integral de asesoramiento y consultoría en aquellas empresas o instituciones que pretendan acometer…” Source: RevenueBase Database · checked Sep 17, 2026
11	Aister	Indirect evidence	Moaña, SpainHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “We are a company specialized in marine aluminium sea works focused on Workboats, Maritime shipbuilding and Marinas.” Source: RevenueBase Database · checked Sep 17, 2026
12	Vicinay Sestao	Indirect evidence	Sestao, SpainHQ checked Sep 17, 2026	201-500	24 contacts →
	Indirect evidence “We design, manufacture and deliver high-added value products and services, adapted to client’s needs and directed at the offshore exploitation and production industry, as well as…” Source: RevenueBase Database · checked Sep 17, 2026
13	Aquática Ingeniería Civil S.L	Indirect evidence	Vigo, SpainHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Aquática es una empresa independiente que presta servicios de ingeniería civil, arquitectura y consultoría financiera aplicada a estos fines.” Source: RevenueBase Database · checked Sep 17, 2026
14	Gefico	Indirect evidence	Cerceda, SpainHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Our products and solutions are intended to operate in extremely harsh conditions.” Source: RevenueBase Database · checked Sep 17, 2026
15	Vicusdt	Partial evidence	Vigo / Houston, SpainHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “Founded in Vigo, Spain in 2007, VICUSdt specializes in ship propulsion engineering and Computational Fluid Dynamics (CFD) for ship hydrodynamics.” Source: RevenueBase Database · checked Sep 17, 2026
16	Seabots	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Seabots is a technology company that delivers marine insights through robotics and data analytics.” Source: RevenueBase Database · checked Sep 17, 2026
17	Oliver Design	Indirect evidence	Getxo, SpainHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Oliver Design es una empresa internacional especializada en arquitectura naval, diseño de interiores y equipamiento integral (interior outfitting), con más de 50 años de…” Source: RevenueBase Database · checked Sep 17, 2026
18	Neos Maritime Consulting	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Una apuesta por la consultoría integral de ingeniería y construcción.” Source: RevenueBase Database · checked Sep 17, 2026
19	Vicinay Marine Innovación	Indirect evidence	Leioa, SpainHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Vicinay Marine Innovación is responsible for providing value to the companies of the Vicinay Marine group and the Oil & Gas and Marine Renewable Energy industries through R+D+i…” Source: RevenueBase Database · checked Sep 17, 2026
20	Marexi Marine Technology	Indirect evidence	Vigo, SpainHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
21	BTP Infraestructuras, S.L	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “BTP Infraestructuras es una compañía creada por un grupo de profesionales con amplia experiencia en el desarrollo de grandes proyectos de ingeniería civil y especialmente en el…” Source: RevenueBase Database · checked Sep 17, 2026
22	F. Carceller	Indirect evidence	Vigo, SpainHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “F.” Source: RevenueBase Database · checked Sep 17, 2026
23	Ploatech	Partial evidence	Girona, SpainHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “PLOATECH is a marine technology consulting company that provides advanced scientific and customized engineering services focusing in the underwater domain.We specialize in remote…” Source: RevenueBase Database · checked Sep 17, 2026
24	Burriel Navarro	Indirect evidence	Valencia, SpainHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Our Company has an established background dating back to 1969, when all types of underwater operations began.” Source: RevenueBase Database · checked Sep 17, 2026
25	Pielago Ingenieria Y Medioambiente SL	Indirect evidence	Telde, SpainHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “PIELAGO INGENIERIA Y MEDIOAMBIENTE SL Es una empresa dedicada a los trabajos submarinos en general con un equipo multidisciplinar, formado por ingenieros de Obras Públicas…” 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: ocean engineering firms. 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 ocean engineering firms.
Partial evidence: Its own public description names part of ocean engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ocean engineering firms. 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 97 ocean engineering firms based in Spain

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Ocean engineering firms based in Spain at a glance

As of Sep 17, 2026

4.3%Verified-email coverage

25.4Average contacts per company

11-50Median size (employees)

14.4%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 97 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 ocean engineering firms, 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 “ocean engineering firms”. 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 ocean engineering firms), 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 ocean engineering firms, 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, 105 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.

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 ocean engineering firms, 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 ocean engineering firms are there based in Spain?

RevenueBase identified 97 ocean engineering firms 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?

Dragados Offshore, headquartered in Puerto Real, tops this list with the largest team on record.

Which city has the most ocean engineering firms?

Madrid leads with 14 headquartered companies, followed by Vigo (9) and Barcelona (8).

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 105 verified decision-maker contacts tracked across these 97 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.