Company lists · Data refreshed September 2026

Top 25 Underwater infrastructure companies worldwide

RevenueBase identified 2,100 company matches for underwater infrastructure companies worldwide as of September 2026 and tracks 156,289 professional contacts across them, including 38,782 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers company matches for underwater infrastructure companies 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 September 22, 2026. Country and city lists for underwater infrastructure companies 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 Sep 22, 2026 How this list was built
2,100Companies
156,289Contacts tracked
38,782Verified emails
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The 25 largest underwater infrastructure companies worldwide

Ranked by team size
Top 25 of 2,100 company matches for underwater infrastructure companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMilan, ItalyHQ recorded Sep 22, 202610001+34,095 contacts →

Exact match

“Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchUnited KingdomHQ recorded Sep 22, 202610001+11,255 contacts →

Exact match

“Technip is a former company that was separated into two independent companies: TechnipFMC and Technip Energies, which now operate with no capital ties.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchAmsterdam, NetherlandsHQ recorded Sep 22, 20265,001-10,0008,478 contacts →

Exact match

“SBM Offshore is the world’s deepwater ocean-infrastructure expert.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchSharjah, United Arab EmiratesHQ recorded Sep 22, 20265,001-10,0006,080 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchBeveren-kruibeke-zwijndrecht, BelgiumHQ recorded Sep 22, 20265,001-10,0004,395 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 · Sep 22, 2026 · View company records in RevenueBase
6Exact match3063 Nh, NetherlandsHQ recorded Sep 22, 20265,001-10,0004,364 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 · Sep 22, 2026 · View company records in RevenueBase
7Exact matchPapendrecht, NetherlandsHQ recorded Sep 22, 202610001+3,366 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 · Sep 22, 2026 · View company records in RevenueBase
8Exact matchLeiden, NetherlandsHQ recorded Sep 22, 20261,001-5,0002,643 contacts →

Exact match

“Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchChâtel-saint-denis, SwitzerlandHQ recorded Sep 22, 20261,001-5,0002,554 contacts →

Exact match

“Allseas is a world-leading contractor in the offshore energy market.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchMusaffah Industrial, United Arab EmiratesHQ recorded Sep 22, 20261,001-5,0002,365 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 · Sep 22, 2026 · View company records in RevenueBase
11Exact matchBrazilHQ recorded Sep 22, 2026n/a2,224 contacts →

Exact match

“Rov company.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchFranceHQ recorded Sep 22, 20265,001-10,0001,829 contacts →

Exact match

“The Ponticelli Frères Group is one of the main European service suppliers to companies in the energy (oil and gas, nuclear, renewable energy), industrial (chemical, steelworks…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchDk-8260 Viby J, DenmarkHQ recorded Sep 22, 20265,001-10,0001,760 contacts →

Exact match

“I Aarsleff-koncernen er vi drevet af ordentlighed.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchOslo, NorwayHQ recorded Sep 22, 20261,001-5,0001,375 contacts →

Exact match

“DeepOcean is a technology-driven, independent solution provider in the ocean space.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchNijkerk, NetherlandsHQ recorded Sep 22, 20261,001-5,0001,307 contacts →

Exact match

“De infrapartner voor Nederland.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchAbu Dhabi, United Arab EmiratesHQ recorded Sep 22, 2026201-5001,279 contacts →

Exact match

“(Underwater Engineering) S.A.L was established in 1976.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Sep 22, 20261,001-5,0001,185 contacts →

Exact match

“SubCom engineers, manufactures, and installs subsea fiber optic data cables - the unsung heroes of global communication.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchLes Ulis, FranceHQ recorded Sep 22, 20261,001-5,0001,140 contacts →

Exact match

“Alcatel Submarine Networks, leads the industry in terms of transmission capacity and installed base with more than km of optical submarine systems deployed worldwide (enough to…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchMatriz, BrazilHQ recorded Sep 22, 20261,001-5,0001,108 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 · Sep 22, 2026 · View company records in RevenueBase
20Exact matchIndianapolis, IN, United StatesHQ recorded Sep 22, 20261,001-5,000974 contacts →

Exact match

“Miller Pipeline is the single-source, premier provider for all underground construction system solutions in transmission, distribution, and water/wastewater management.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchAberdeenshire, United KingdomHQ recorded Sep 22, 2026501-1,000955 contacts →

Exact match

“Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchCranford, NJ, United StatesHQ recorded Sep 22, 20261,001-5,000847 contacts →

Exact match

“Founded in 1919, Weeks Marine, Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchRavenna, ItalyHQ recorded Sep 22, 2026201-500841 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 · Sep 22, 2026 · View company records in RevenueBase
24Exact matchWalsall, United KingdomHQ recorded Sep 22, 20261,001-5,000803 contacts →

Exact match

“Barhale was formed in 1980 as a specialist tunnelling contractor and grew initially through the successful delivery of projects in the water sector, developing mechanical and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchAbu Dhabi, United Arab EmiratesHQ recorded Sep 22, 20261,001-5,000793 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 · Sep 22, 2026 · View company records in RevenueBase

Showing 25 of 2,100 underwater infrastructure companies worldwide

See the full list, filter by size, metro and specialty, and access 38,782 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwater infrastructure companies worldwide at a glance

As of Sep 22, 2026
24.8%Verified-email coverage
74.4Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Singapore
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
689
11-50
758
51-200
386
201-500
145
501-1,000
41
1,001-5,000
47
5,001-10,000
9
10001+
14

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 underwater infrastructure companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “underwater infrastructure companies” 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 38,782 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 September 22, 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.

Underwater infrastructure companies by location

15 lists · largest first

Every Underwater infrastructure companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “underwater infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater infrastructure companies are there worldwide?

RevenueBase identified 2,100 company matches for underwater infrastructure companies worldwide as of September 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?

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

Which country has the most underwater infrastructure companies?

The United States leads with 304 companies, followed by the United Kingdom (228) and the Netherlands (136). Every underwater infrastructure companies list by country and city is linked on this page.

Which city has the most underwater infrastructure companies?

Singapore leads with 38 company records, followed by Aberdeen (32) and Houston (31).

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 38,782 professional contacts with verified work emails tracked across these 2,100 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 September 22, 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.