Company lists · Data refreshed September 2026
Top 25 Marine and subsea consulting firms based in Spain
RevenueBase identified 499 marine and subsea consulting firms headquartered in Spain as of September 2026 and tracks 10,086 professional contacts across them, including 882 with verified work emails. Madrid is the largest hub.
This list covers marine and subsea consulting 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 28, 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.
The 25 largest marine and subsea consulting firms based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,348 contacts → | ||||
Indirect evidence “Founded in 1972, Dragados Offshore S.A.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 856 contacts → | ||||
Indirect evidence “Ghenova is an engineering company that works internationally offering multidisciplinary engineering and consultancy services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 439 contacts → | ||||
Partial evidence “We’re an Engineering and Consulting company with more than 35 years of experience and a diverse range of services in the Building, Infrastructure, Energy and Industry, Environment…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 363 contacts → | ||||
Indirect evidence “Iplan is a company related to the engineering services of projects developed mainly in the energy sector, civil works, renewable energies and environment.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 268 contacts → | ||||
Indirect evidence “Desde 1970 ESTEYCO ha desarrollado internacionalmente más de 1.300 estudios y proyectos.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 240 contacts → | ||||
Indirect evidence “Founded in 1988, SAITEC is one of the most prestigious engineering firms in Spain at present.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 236 contacts → | ||||
Partial evidence “Ingeniería Estudios y Proyectos NIP, S.A.(NIPSA) is a Spanish engineering and consulting company created in 1976 with the purpose of providing high quality and flexible technical…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 234 contacts → | ||||
Partial evidence “ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 208 contacts → | ||||
Partial 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 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 109 contacts → | ||||
Indirect evidence “HEYMO es una empresa de servicios profesionales de ingeniería y consultoría que cuenta con 60 años de experiencia nacional e internacional.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 106 contacts → | ||||
Indirect evidence “Desde sus inicios, URCI participó activamente en el desarrollo de las infraestructuras viarias, ferroviarias, portuarias y aeroportuarias construidas en España por el gobierno, y…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 103 contacts → | ||||
Indirect 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 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 102 contacts → | ||||
Partial evidence “Aage Hempel Group is a company specialized in maritime services mainly for the shipping industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 98 contacts → | ||||
Indirect evidence “AZCATEC It is the tool for a group of well-organized professional engineers and experts in the development of industrial plants, energy and environmental engineering have to…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 92 contacts → | ||||
Indirect evidence “DISEÑOS Y PROYECTOS REUNIDOS, S.A.(DISEPROSA), fundada en Madrid en 1986 y dedicada al desarrollo y prestación de servicios de Ingeniería y Consultoría, Dirección y Supervisión de…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 92 contacts → | ||||
Indirect evidence “Emurtel es una compañía líder de ingeniería y consultoría multidisciplinar orientada a la gestión integral de proyectos, ofreciendo soluciones de valor añadido en el diseño…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 68 contacts → | ||||
Partial evidence “LRA INFRASTRUCTURES CONSULTING, es una empresa creada para llevar a cabo los trabajos de consultoría de infraestructuras que se han venido desarrollando desde 1987 bajo la marca…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 65 contacts → | ||||
Indirect evidence “Tauw Iberia is an independent environmental consultancy and engineering company established in 1989.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 63 contacts → | ||||
Indirect evidence “Seaplace is an Offshore Engineering and Ship Design office.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 39 contacts → | ||||
Indirect 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 28, 2026Thanks. The Data Team will review it. | |||||
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 and subsea consulting 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 marine and subsea consulting firms.
- Partial evidence
- Its own public description names part of marine and subsea consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name marine and subsea consulting 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 499 marine and subsea consulting firms based in Spain
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Marine and subsea consulting firms based in Spain at a glance
As of Sep 28, 2026Companies by employee count
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 499 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 and subsea consulting 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 “marine and subsea consulting 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 marine and subsea consulting 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 marine and subsea consulting 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, 882 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 28, 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 and subsea consulting firms by metro
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 and subsea consulting 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 marine and subsea consulting firms are there based in Spain?
RevenueBase identified 499 marine and subsea consulting 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 marine and subsea consulting firms?
Madrid leads with 74 headquartered companies, followed by Barcelona (45) and Vigo (17).
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 882 verified decision-maker contacts tracked across these 499 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 28, 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.
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