Company lists · Data refreshed September 2026

Top 25 Marine resource consulting firms worldwide

Name: Marine resource consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 6,076 companies tracked

RevenueBase identified 6,076 marine resource consulting firms worldwide as of September 2026 and tracks 86,096 professional contacts across them, including 25,025 with verified work emails and 10,091 with mobile numbers. The United States is the largest market and Singapore the largest hub.

This list covers marine resource consulting firms worldwide, 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 5, 2026. Country and city lists for marine resource consulting firms follow the table.

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 5, 2026 86% judged on-target in blind review

6,076Companies

86,096Contacts tracked

25,025Verified emails

10,091Mobile numbers

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The 25 largest marine resource consulting firms worldwide

Ranked by team size

Top 25 of 6,076 marine resource consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to marine resource consulting 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	Deme Group	Partial evidence	Beveren-kruibeke-zwijndrecht, BelgiumHQ checked Sep 5, 2026	5,001-10,000	4,395 contacts →
	Partial evidence “DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, dredging and marine infrastructure, and environmental remediation.” Source: RevenueBase Database · checked Sep 5, 2026
2	Swca Environmental Consultants	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,629 contacts →
	Partial evidence “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Source: RevenueBase Database · checked Sep 5, 2026
3	Maersk Supply Service	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 5, 2026	201-500	1,407 contacts →
	Indirect evidence “With more than 50 years of legacy, Maersk Supply Service celebrates a new important milestone: from November 1st, our headquarters are officially located in Brazil.” Source: RevenueBase Database · checked Sep 5, 2026
4	Shearwater Geoservices	Partial evidence	Laksevåg, NorwayHQ checked Sep 5, 2026	1,001-5,000	1,031 contacts →
	Partial evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 5, 2026
5	Micoperi SRL	Partial evidence	Ravenna, ItalyHQ checked Sep 5, 2026	201-500	841 contacts →
	Partial evidence “MICOPERI has been active in the marine sector since 1946 when the company was incorporated as a salvage company to free the shipping routes from vessels sunk during the Second…” Source: RevenueBase Database · checked Sep 5, 2026
6	ABL	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	804 contacts →
	Partial evidence “The Energy and Marine Consultants - an Aqualis company.” Source: RevenueBase Database · checked Sep 5, 2026
7	Institute Of Marine Research IMR , Norway	Partial evidence	Bergen, NorwayHQ checked Sep 5, 2026	1,001-5,000	783 contacts →
	Partial evidence “The Institute of Marine Research (IMR) is one of the biggest research institute of its kind in Europe, with over employees.” Source: RevenueBase Database · checked Sep 5, 2026
8	Environmental Science Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	501-1,000	732 contacts →
	Partial evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 5, 2026
9	CEFAS	Indirect evidence	Lowestoft, United KingdomHQ checked Sep 5, 2026	501-1,000	559 contacts →
	Indirect evidence “Cefas (Centre for Environment, Fisheries and Aquaculture Science) is an internationally renowned aquatic scientific research and consultancy centre.” Source: RevenueBase Database · checked Sep 5, 2026
10	Gardline Limited	Partial evidence	Great Yarmouth, United KingdomHQ checked Sep 5, 2026	501-1,000	545 contacts →
	Partial evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 5, 2026
11	Aries Group Of Companies	Partial evidence	Sharjah, United Arab EmiratesHQ checked Sep 5, 2026	1,001-5,000	482 contacts →
	Partial evidence “Founded by Sir Sohan Roy on 28 March 1998 in the United Arab Emirates, Aries Group began with its flagship unit, Aries Marine, and has since grown into one of the largest…” Source: RevenueBase Database · checked Sep 5, 2026
12	Anchor QEA	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	501-1,000	479 contacts →
	Partial evidence “Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Source: RevenueBase Database · checked Sep 5, 2026
13	Rincon Consultants	Partial evidence	Ventura, CA, United StatesHQ checked Sep 5, 2026	501-1,000	479 contacts →
	Partial evidence “Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Source: RevenueBase Database · checked Sep 5, 2026
14	Global Maritime	Partial evidence	Stavanger, NorwayHQ checked Sep 5, 2026	201-500	472 contacts →
	Partial evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 5, 2026
15	Sete Soluções E Tecnologia Ambiental	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 5, 2026	501-1,000	448 contacts →
	Indirect evidence “Somos uma das maiores consultorias em meio ambiente do Brasil, fundada em 1997, contando, hoje, com uma equipe técnica multidisciplinar permanente, que congrega profissionais das…” Source: RevenueBase Database · checked Sep 5, 2026
16	Groundwater & Environmental Services, INC	Indirect evidence	Wall Township, NJ, United StatesHQ checked Sep 5, 2026	201-500	447 contacts →
	Indirect evidence “We are Groundwater & Environmental Services, Inc, better known as GES.” Source: RevenueBase Database · checked Sep 5, 2026
17	Hydrodive Group	Partial evidence	Lagos, NigeriaHQ checked Sep 5, 2026	201-500	409 contacts →
	Partial evidence “HydroDive provides a broad range of Marine Vessels, Air, Mixed Gas and Saturation Diving, ROV, AUV and Survey Services primarily to the offshore & inshore Petroleum Industry of…” Source: RevenueBase Database · checked Sep 5, 2026
18	James Fisher And Sons PLC	Indirect evidence	Barrow-in-furness, United KingdomHQ checked Sep 5, 2026	1,001-5,000	403 contacts →
	Indirect evidence “Above, below and beyond the world’s oceans.” Source: RevenueBase Database · checked Sep 5, 2026
19	Coastal Marine Construction & Engineering LTD	Partial evidence	Mira Bhayander, IndiaHQ checked Sep 5, 2026	201-500	403 contacts →
	Partial evidence “COMACOE - Coastal Marine Construction & Engineering Ltd is an experienced marine services contractor with operations in multiple geographies offering a range of service over the…” Source: RevenueBase Database · checked Sep 5, 2026
20	Briggs Marine	Partial evidence	Burntisland, United KingdomHQ checked Sep 5, 2026	501-1,000	387 contacts →
	Partial evidence “Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.” Source: RevenueBase Database · checked Sep 5, 2026
21	Horizon Geosciences	Partial evidence	Sharjah, United Arab EmiratesHQ checked Sep 5, 2026	201-500	381 contacts →
	Partial evidence “Headquartered in the UAE, Horizon Geosciences provide marine survey and geotechnical services to an array of clients around the world.” Source: RevenueBase Database · checked Sep 5, 2026
22	Gestiona Consultores	Indirect evidence	Santiago, ChileHQ checked Sep 5, 2026	201-500	375 contacts →
	Indirect evidence “Somos un equipo consolidado y multidisciplinario de profesionales con amplia experiencia en la gestión para el cumplimiento normativo de proyectos de inversión.” Source: RevenueBase Database · checked Sep 5, 2026
23	Geoxyz	Partial evidence	Zwevegem, BelgiumHQ checked Sep 5, 2026	501-1,000	374 contacts →
	Partial evidence “GEOxyz is an international maritime data company specialized in hydrographic, geophysical, geotechnical and topographical surveys, site investigations, renewable energy support…” Source: RevenueBase Database · checked Sep 5, 2026
24	Kotug International	Partial evidence	Rotterdam Havens, NetherlandsHQ checked Sep 5, 2026	201-500	330 contacts →
	Partial evidence “AHEAD IN MARITIME EXCELLENCE We are KOTUG.” Source: RevenueBase Database · checked Sep 5, 2026
25	Environmental Consulting & Technology, Inc. ECT	Partial evidence	Gainesville, FL, United StatesHQ checked Sep 5, 2026	201-500	305 contacts →
	Partial evidence “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Source: RevenueBase Database · checked Sep 5, 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 resource 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 resource consulting firms.
Partial evidence: Its own public description names part of marine resource 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 resource 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 6,076 marine resource consulting firms worldwide

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Marine resource consulting firms worldwide at a glance

As of Sep 5, 2026

29.1%Verified-email coverage

11.7%Mobile-number coverage

14.2Average contacts per company

1-10Median size (employees)

1.9%Largest-city concentration · Singapore

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

3,770

11-50

1,712

51-200

410

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 resource 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.
Coverage: 33 countries, largest first: the United States, Brazil, the United Kingdom, Australia, Canada, France, India, Spain, Türkiye, the Netherlands and 23 more. Country and city lists for marine resource consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “marine resource 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 resource 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 resource consulting firms, and records with no verified work email.
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, 25,025 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 between September 5, 2026 and September 14, 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 resource consulting firms by location

43 lists · largest first

Every Marine resource consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 resource 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 resource consulting firms are there worldwide?

RevenueBase identified 6,076 marine resource consulting firms worldwide 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?

Deme Group, headquartered in Beveren-Kruibeke-Zwijndrecht, tops this list with the largest team on record.

Which country has the most marine resource consulting firms?

The United States leads with 1,243 companies, followed by Brazil (784) and the United Kingdom (590). Every marine resource consulting firms list by country and city is linked on this page.

Which city has the most marine resource consulting firms?

Singapore leads with 114 headquartered companies, followed by London (99) and Rio De Janeiro (73).

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 25,025 verified decision-maker contacts tracked across these 6,076 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 5, 2026 and September 14, 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.