Company lists · Data refreshed October 2026

Top 25 Marine geotechnical contractors worldwide

Name: Marine geotechnical contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 18, 2026 10,678 companies tracked

RevenueBase identified 10,678 company matches for marine geotechnical contractors worldwide as of October 2026 and tracks 231,005 professional contacts across them, including 59,630 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers company matches for marine geotechnical contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 18, 2026. Country and city lists for marine geotechnical contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 18, 2026 How this list was built

10,678Companies

231,005Contacts tracked

59,630Verified emails

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The 25 largest marine geotechnical contractors worldwide

Ranked by team size

Top 25 of 10,678 company matches for marine geotechnical contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 18, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2	Deme Group	Exact match	Beveren-kruibeke-zwijndrecht, BelgiumHQ recorded Oct 18, 2026	5,001-10,000	4,648 contacts →
	Exact match “DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, dredging and marine infrastructure, and environmental remediation.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
3	VAN Oord	Exact match	3063 Nh, NetherlandsHQ recorded Oct 18, 2026	5,001-10,000	4,483 contacts →
	Exact match “Van Oord is a leading international marine contractor focusing on dredging, infrastructure and offshore energy projects.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4	Keller	Exact match	London, United KingdomHQ recorded Oct 18, 2026	5,001-10,000	4,148 contacts →
	Exact match “Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5	Boskalis	Exact match	Papendrecht, NetherlandsHQ recorded Oct 18, 2026	10001+	3,503 contacts →
	Exact match “Boskalis is a leading global services provider operating in the dredging, maritime infrastructure and maritime services sectors.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6	Heerema Marine Contractors	Exact match	Leiden, NetherlandsHQ recorded Oct 18, 2026	1,001-5,000	2,792 contacts →
	Exact match “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7	Allseas	Exact match	Châtel-saint-denis, United StatesHQ recorded Oct 18, 2026	1,001-5,000	2,765 contacts →
	Exact match “Allseas is a world-leading contractor in the offshore energy market.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8	Zamil Offshore Services Company	Exact match	Al-khobar, Saudi ArabiaHQ recorded Oct 18, 2026	1,001-5,000	2,406 contacts →
	Exact match “Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9	Nmdc Dredging & Marine	Exact match	Musaffah Industrial, United Arab EmiratesHQ recorded Oct 18, 2026	1,001-5,000	2,382 contacts →
	Exact match “NMDC Dredging & Marine was established in 1976 as a dredging division of Abu Dhabi National Oil Company (ADNOC).” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10	Free Lancer	Exact match	BrazilHQ recorded Oct 18, 2026	n/a	2,271 contacts →
	Exact match “Rov company.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Oct 18, 2026	1,001-5,000	2,259 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12	Chantiers DE L'atlantique	Exact match	Saint-nazaire, FranceHQ recorded Oct 18, 2026	1,001-5,000	2,121 contacts →
	Exact match “Installée sur la façade Atlantique, Chantiers de l’Atlantique est une entreprise de construction maritime (paquebots, sous-stations…) et de services aux flottes.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13	Grupo CBO	Exact match	Niterói, BrazilHQ recorded Oct 18, 2026	1,001-5,000	1,972 contacts →
	Exact match “O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14	CCC Underwater Engineering S.A.L	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Oct 18, 2026	201-500	1,314 contacts →
	Exact match “(Underwater Engineering) S.A.L was established in 1976.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15	Soletanche Bachy	Exact match	Rueil-malmaison, FranceHQ recorded Oct 18, 2026	5,001-10,000	1,265 contacts →
	Exact match “Soletanche Bachy is a world benchmark in foundations and soil technologies, and is involved in over projects every year.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16	Aries Marine And Engineering Services	Exact match	United Arab EmiratesHQ recorded Oct 18, 2026	1,001-5,000	1,257 contacts →
	Exact match “Aries is the largest Engineering, Inspection & Maintenance firm in the Middle East.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17	BELOV	Exact match	Matriz, BrazilHQ recorded Oct 18, 2026	1,001-5,000	1,199 contacts →
	Exact match “A Belov Engenharia foi criada em 1981 em Salvador/BA, pelo engenheiro Aleixo Belov, que à época desfrutava de uma experiência de 15 anos de participação na condução das maiores…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18	Shearwater Geoservices	Exact match	Laksevåg, United StatesHQ recorded Oct 18, 2026	1,001-5,000	1,060 contacts →
	Exact match “Shearwater is a global marine geoscience and technology business.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19	Great Lakes Dredge & Dock Company, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 18, 2026	1,001-5,000	966 contacts →
	Exact match “Great Lakes Dredge & Dock (GLDD) is the largest provider of dredging services in the United States and the only U.S.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20	GZA Geoenvironmental, INC	Exact match	Norwood, MA, United StatesHQ recorded Oct 18, 2026	501-1,000	903 contacts →
	Exact match “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21	Micoperi SRL	Exact match	Ravenna, ItalyHQ recorded Oct 18, 2026	201-500	898 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22	Weeks Marine, INC	Exact match	Cranford, NJ, United StatesHQ recorded Oct 18, 2026	1,001-5,000	863 contacts →
	Exact match “Founded in 1919, Weeks Marine, Inc.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23	Swire Pacific Offshore	Exact match	SingaporeHQ recorded Oct 18, 2026	1,001-5,000	831 contacts →
	Exact match “Established since 1975, Swire Pacific Offshore (SPO) was a trusted marine services provider that pride itself on delivering safe, high quality, reliable and sustainable Marine…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24	Allianz Middle East Ship Management LLC	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Oct 18, 2026	1,001-5,000	801 contacts →
	Exact match “With offices in Abu Dhabi, Dubai, Qatar and Singapore, Allianz Middle East Ship Management LLC(Allianz-ME) is a well-established marine contractors providing modern Offshore…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25	KBR Energo Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 18, 2026	n/a	795 contacts →
	Exact match “Energo Engineering is a KBR Company that provides the full package of structural integrity management (SIM) and advanced structural engineering services for offshore floating and…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “marine geotechnical contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 10,678 marine geotechnical contractors worldwide

See the full list, filter by size, metro and specialty, and access 59,630 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marine geotechnical contractors worldwide at a glance

As of Oct 18, 2026

25.8%Verified-email coverage

21.6Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Singapore

Oct 18, 2026Page data refreshed

Companies by employee count

1-10

4,637

11-50

3,818

51-200

1,523

201-500

420

501-1,000

130

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for marine geotechnical contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “marine geotechnical contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 59,630 professional contacts with verified work emails across the full matched dataset. 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 October 18, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Marine geotechnical contractors by location

50 lists · largest first

Every Marine geotechnical contractors 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “marine geotechnical contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many marine geotechnical contractors are there worldwide?

RevenueBase identified 10,678 company matches for marine geotechnical contractors worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Terracon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most marine geotechnical contractors?

The United States leads with 1,659 companies, followed by the United Kingdom (817) and Brazil (578). Every marine geotechnical contractors list by country and city is linked on this page.

Which city has the most marine geotechnical contractors?

Singapore leads with 165 company records, followed by Dubai (103) and Istanbul (79).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 59,630 professional contacts with verified work emails tracked across these 10,678 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 18, 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 SmartSearch, 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.