Company lists · Data refreshed September 2026

Top 25 Marine engineering and consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 23,765 companies tracked

RevenueBase identified 23,765 marine engineering and consulting firms worldwide as of September 2026 and tracks 778,063 professional contacts across them, including 203,014 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers marine engineering and 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 28, 2026. Country and city lists for marine engineering and 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 28, 2026 86% judged on-target in blind review

23,765Companies

778,063Contacts tracked

203,014Verified emails

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The 25 largest marine engineering and consulting firms worldwide

Ranked by team size

Top 25 of 23,765 marine engineering and consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marine engineering and 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	AECOM	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	10001+	63,914 contacts →
	Indirect evidence “AECOM is the global infrastructure leader, committed to delivering a better world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Saipem	Partial evidence	Milan, ItalyHQ checked Sep 28, 2026	10001+	34,095 contacts →
	Partial evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 28, 2026
3	Atkinsréalis	Partial evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	10001+	22,733 contacts →
	Partial evidence “We are a world-class engineering services and nuclear organization.” Source: RevenueBase Database · checked Sep 28, 2026
4	Mcdermott International, LTD	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	10001+	20,135 contacts →
	Partial evidence “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
5	Amec Foster Wheeler	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	10001+	14,368 contacts →
	Partial evidence “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Source: RevenueBase Database · checked Sep 28, 2026
6	Tetra Tech	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 28, 2026	10001+	12,999 contacts →
	Partial evidence “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
7	Atkins	Indirect evidence	Epsom, United KingdomHQ checked Sep 28, 2026	10001+	9,297 contacts →
	Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
8	Tata Consulting Engineers	Strong evidence	Mumbai, IndiaHQ checked Sep 28, 2026	5,001-10,000	8,440 contacts →
	Strong evidence “Tata Consulting Engineers Limited (TCE) is the largest Indian private sector engineering and project consultancy and an emerging global leader in integrated engineering solutions.” Source: RevenueBase Database · checked Sep 28, 2026
9	CDM Smith	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	5,001-10,000	7,527 contacts →
	Indirect evidence “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
10	Afcons Infrastructure Limited	Partial evidence	Veera Desai Road, IndiaHQ checked Sep 28, 2026	1,001-5,000	6,807 contacts →
	Partial evidence “Afcons is flagship infrastructure engineering & construction company of the Shapoorji Pallonji Group.” Source: RevenueBase Database · checked Sep 28, 2026
11	Lamprell	Indirect evidence	Sharjah, United Arab EmiratesHQ checked Sep 28, 2026	5,001-10,000	6,080 contacts →
	Indirect evidence “With 50 years of experience, Lamprell is a key player in the global offshore wind and oil & gas markets, delivering high-quality, complex energy infrastructure projects.” Source: RevenueBase Database · checked Sep 28, 2026
12	Kongsberg Maritime	Partial evidence	Kongsberg, NorwayHQ checked Sep 28, 2026	5,001-10,000	5,555 contacts →
	Partial evidence “Kongsberg Maritime is your trusted partner in navigating the complexities of the maritime industry.” Source: RevenueBase Database · checked Sep 28, 2026
13	Seatrium	Strong evidence	United StatesHQ checked Sep 28, 2026	10001+	4,522 contacts →
	Strong evidence “A Premier Global Player with Deep Engineering Expertise in the offshore, marine and energy industries Engineering our Future Together.” Source: RevenueBase Database · checked Sep 28, 2026
14	Deme Group	Partial evidence	Beveren-kruibeke-zwijndrecht, BelgiumHQ checked Sep 28, 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 28, 2026
15	VAN Oord	Partial evidence	3063 Nh, NetherlandsHQ checked Sep 28, 2026	5,001-10,000	4,364 contacts →
	Partial evidence “Van Oord is a leading international marine contractor focusing on dredging, infrastructure and offshore energy projects.” Source: RevenueBase Database · checked Sep 28, 2026
16	Michael Baker International	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,362 contacts →
	Strong evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 28, 2026
17	DAMEN	Indirect evidence	Gorinchem, NetherlandsHQ checked Sep 28, 2026	10001+	4,210 contacts →
	Indirect evidence “Oceans, seas, lakes and rivers offer growing possibilities in the areas of trade, food, energy and recreation.” Source: RevenueBase Database · checked Sep 28, 2026
18	China Harbour Engineering Co. LTD	Strong evidence	Beijing, ChinaHQ checked Sep 28, 2026	5,001-10,000	3,835 contacts →
	Strong evidence “CHEC is focused on basic infrastructure construction, such as Marine Engineering, Dredging and Reclamation, Road and Bridge, Railways, Airports, Complete Plant, and other works.” Source: RevenueBase Database · checked Sep 28, 2026
19	ENPPI	Partial evidence	Nasr City 1, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,370 contacts →
	Partial evidence “Enppi is globally recognized as a major engineering, EPC main contractor, and management contractor, with decades of experience in onshore and offshore projects in the oil and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Boskalis	Partial evidence	Papendrecht, NetherlandsHQ checked Sep 28, 2026	10001+	3,366 contacts →
	Partial evidence “Boskalis is a leading global services provider operating in the dredging, maritime infrastructure and maritime services sectors.” Source: RevenueBase Database · checked Sep 28, 2026
21	Murphy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	3,095 contacts →
	Partial evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
22	Gran Services S.A	Indirect evidence	Macaé, BrazilHQ checked Sep 28, 2026	1,001-5,000	2,752 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
23	Priner	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 28, 2026	5,001-10,000	2,737 contacts →
	Indirect evidence “Há mais de 40 anos, a Priner se destaca no setor de engenharia industrial e infraestrutura, oferecendo soluções com excelência técnica, seguras e eficientes.” Source: RevenueBase Database · checked Sep 28, 2026
24	دار الرياض DAR AL Riyadh	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	1,001-5,000	2,720 contacts →
	Partial evidence “Founded in the mid-1970s by Prince Turki bin Abdullah bin Abdulrahman Al Saud, a forward-thinking engineering pioneer, Dar Al Riyadh has evolved into the Kingdom's leading…” Source: RevenueBase Database · checked Sep 28, 2026
25	Heerema Marine Contractors	Partial evidence	Leiden, NetherlandsHQ checked Sep 28, 2026	1,001-5,000	2,643 contacts →
	Partial evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 28, 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 engineering and 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 engineering and consulting firms.
Partial evidence: Its own public description names part of marine engineering and 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 engineering and 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 23,765 marine engineering and consulting firms worldwide

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Marine engineering and consulting firms worldwide at a glance

As of Sep 28, 2026

26.1%Verified-email coverage

32.7Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Singapore

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

10,772

11-50

7,913

51-200

3,277

201-500

1,000

501-1,000

355

1,001-5,000

268

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 engineering and 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: Every country. Country and city lists for marine engineering and consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “marine engineering and 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 engineering and 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 engineering and 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, 203,014 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 engineering and consulting firms by location

118 lists · largest first

Every Marine engineering and 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 engineering and 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 engineering and consulting firms are there worldwide?

RevenueBase identified 23,765 marine engineering and 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?

AECOM, headquartered in Dallas, tops this list with the largest team on record.

Which country has the most marine engineering and consulting firms?

The United States leads with 2,732 companies, followed by the United Kingdom (1,360) and India (1,282). Every marine engineering and consulting firms list by country and city is linked on this page.

Which city has the most marine engineering and consulting firms?

Singapore leads with 333 headquartered companies, followed by Istanbul (259) and Dubai (244).

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 203,014 verified decision-maker contacts tracked across these 23,765 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.