Company lists · Data refreshed September 2026

Top 25 Marine environmental compliance consultants worldwide

Name: Marine environmental compliance consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 6,944 companies tracked

RevenueBase identified 6,944 marine environmental compliance consultants worldwide as of September 2026 and tracks 70,783 professional contacts across them, including 17,170 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers marine environmental compliance consultants 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 20, 2026. Country and city lists for marine environmental compliance consultants 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 20, 2026 86% judged on-target in blind review

6,944Companies

70,783Contacts tracked

17,170Verified emails

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The 25 largest marine environmental compliance consultants worldwide

Ranked by team size

Top 25 of 6,944 marine environmental compliance consultants worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental compliance consultants: 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	Maersk Supply Service	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 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 20, 2026
2	Wallem Group	Partial evidence	Hong KongHQ checked Sep 20, 2026	501-1,000	1,313 contacts →
	Partial evidence “First established in Shanghai in 1903, Wallem Group has a 120-year maritime heritage with a presence in 19 countries globally.” Source: RevenueBase Database · checked Sep 20, 2026
3	Alliance Technical Group	Partial evidence	Decatur, AL, United StatesHQ checked Sep 20, 2026	1,001-5,000	956 contacts →
	Partial evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 20, 2026
4	ABL	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	804 contacts →
	Strong evidence “The Energy and Marine Consultants - an Aqualis company.” Source: RevenueBase Database · checked Sep 20, 2026
5	Gardline Limited	Strong evidence	Great Yarmouth, United KingdomHQ checked Sep 20, 2026	501-1,000	545 contacts →
	Strong evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 20, 2026
6	VLS Environmental Solutions, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	481 contacts →
	Partial evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 20, 2026
7	Anchor QEA	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 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 20, 2026
8	Global Maritime	Partial evidence	Stavanger, NorwayHQ checked Sep 20, 2026	201-500	472 contacts →
	Partial evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 20, 2026
9	Groundwater & Environmental Services, INC	Partial evidence	Wall Township, NJ, United StatesHQ checked Sep 20, 2026	201-500	447 contacts →
	Partial evidence “We are Groundwater & Environmental Services, Inc, better known as GES.” Source: RevenueBase Database · checked Sep 20, 2026
10	ROUX	Partial evidence	Islandia, NY, United StatesHQ checked Sep 20, 2026	201-500	433 contacts →
	Partial evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 20, 2026
11	Coastal Marine Construction & Engineering LTD	Partial evidence	Mira Bhayander, IndiaHQ checked Sep 20, 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 20, 2026
12	LSC	Indirect evidence	Riga, LatviaHQ checked Sep 20, 2026	1,001-5,000	394 contacts →
	Indirect evidence “LSC specializes in technical management services for Oil, Product, Chemical tankers and Gas tankers.” Source: RevenueBase Database · checked Sep 20, 2026
13	Briggs Marine	Strong evidence	Burntisland, United KingdomHQ checked Sep 20, 2026	501-1,000	387 contacts →
	Strong 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 20, 2026
14	Kotug International	Partial evidence	Rotterdam Havens, NetherlandsHQ checked Sep 20, 2026	201-500	330 contacts →
	Partial evidence “AHEAD IN MARITIME EXCELLENCE We are KOTUG.” Source: RevenueBase Database · checked Sep 20, 2026
15	Drew Marine	Strong evidence	Waterbury, CT, United StatesHQ checked Sep 20, 2026	201-500	304 contacts →
	Strong evidence “Drew Marine is a global leader in maritime water treatment, fuel management, refrigerant compliance, cleaning solutions, and technical services trusted by ship owners, operators…” Source: RevenueBase Database · checked Sep 20, 2026
16	Resolve Marine	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 20, 2026	51-200	277 contacts →
	Strong evidence “Resolve Marine, a global leader in vessel salvage, emergency response, compliance and specialized marine services, has served and supported clients and projects for 40 years.” Source: RevenueBase Database · checked Sep 20, 2026
17	Australian Offshore Solutions PTY LTD	Partial evidence	Applecross, AustraliaHQ checked Sep 20, 2026	501-1,000	273 contacts →
	Partial evidence “Australian Offshore Solutions Australian Offshore Solutions offers a diverse range of specialised marine services to the offshore oil and gas and construction industries.” Source: RevenueBase Database · checked Sep 20, 2026
18	Global Ship Port Service	Indirect evidence	Salvador, BrazilHQ checked Sep 20, 2026	501-1,000	268 contacts →
	Indirect evidence “Somos a Global Ship, uma empresa líder em operações marítimas e portuárias.” Source: RevenueBase Database · checked Sep 20, 2026
19	Namdock	Indirect evidence	Walvis Bay, NamibiaHQ checked Sep 20, 2026	501-1,000	240 contacts →
	Indirect evidence “Strategically situated in Walvis Bay Namibia on the western coast of Africa.” Source: RevenueBase Database · checked Sep 20, 2026
20	GAP Ssma	Indirect evidence	Goiânia, BrazilHQ checked Sep 20, 2026	201-500	234 contacts →
	Indirect evidence “A GAP Ambiental oferece serviços para pequenas, médias e grandes empresas em diversas áreas que vão desde o licenciamento ao acompanhamento da execução de projetos.” Source: RevenueBase Database · checked Sep 20, 2026
21	Metiri Group	Partial evidence	Clovis, CA, United StatesHQ checked Sep 20, 2026	n/a	233 contacts →
	Partial evidence “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Source: RevenueBase Database · checked Sep 20, 2026
22	Econservation Estudos E Projetos Ambientais	Indirect evidence	Vitória, BrazilHQ checked Sep 20, 2026	51-200	230 contacts →
	Indirect evidence “A Econservation foi fundada com o propósito de prestação de serviços de Consultoria Especializada, com foco na harmonização dos objetivos e metas de seus clientes com o…” Source: RevenueBase Database · checked Sep 20, 2026
23	Global Diving & Salvage, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	217 contacts →
	Partial evidence “Global is a leader in the marine services industry with decades of experience managing complex, critical and technical projects in and around the water.” Source: RevenueBase Database · checked Sep 20, 2026
24	LOC	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	206 contacts →
	Indirect evidence “ONE PARTNER.” Source: RevenueBase Database · checked Sep 20, 2026
25	SGA Parte DE SLR	Indirect evidence	Santiago, ChileHQ checked Sep 20, 2026	201-500	206 contacts →
	Indirect evidence “SGA S.A.” Source: RevenueBase Database · checked Sep 20, 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 compliance consultants. 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 compliance consultants.
Partial evidence: Its own public description names part of marine environmental compliance consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental compliance consultants. 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 6,944 marine environmental compliance consultants worldwide

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Marine environmental compliance consultants worldwide at a glance

As of Sep 20, 2026

24.3%Verified-email coverage

10.2Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Singapore

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

4,375

11-50

1,959

51-200

442

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 compliance consultants, 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: Every country. Country and city lists for marine environmental compliance consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “marine environmental compliance consultants”. 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 compliance consultants), 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 compliance consultants, 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, 17,170 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 20, 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 compliance consultants by location

36 lists · largest first

Every Marine environmental compliance consultants 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 environmental compliance consultants, 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 compliance consultants are there worldwide?

RevenueBase identified 6,944 marine environmental compliance consultants 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?

Maersk Supply Service, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which country has the most marine environmental compliance consultants?

The United States leads with 965 companies, followed by Brazil (875) and the United Kingdom (430). Every marine environmental compliance consultants list by country and city is linked on this page.

Which city has the most marine environmental compliance consultants?

Singapore leads with 92 headquartered companies, followed by Sao Paulo (84) and Rio De Janeiro (63).

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 17,170 verified decision-maker contacts tracked across these 6,944 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 20, 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.