Company lists · Data refreshed September 2026

Top 25 Subsea intervention service providers worldwide

RevenueBase identified 2,327 company matches for subsea intervention service providers worldwide as of September 2026 and tracks 131,143 professional contacts across them, including 25,002 with verified work emails. The United Kingdom is the largest market and Singapore the largest hub.

This list covers company matches for subsea intervention service providers 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 subsea intervention service providers 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
2,327Companies
131,143Contacts tracked
25,002Verified emails
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The 25 largest subsea intervention service providers worldwide

Ranked by team size
Top 25 of 2,327 company matches for subsea intervention service providers 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 matchHouston, TX, United StatesHQ recorded Sep 22, 202610001+12,031 contacts →

Exact match

“Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, and manufacturing…”

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 matchHouston, TX, United StatesHQ recorded Sep 22, 202610001+6,543 contacts →

Exact match

“SLB OneSubsea is the world’s leading subsea technology and solutions provider, focused on accelerating innovation to improve subsea asset performance, while increasing energy…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Sep 22, 20265,001-10,0006,466 contacts →

Exact match

“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchBergen, NorwayHQ recorded Sep 22, 20265,001-10,0002,942 contacts →

Exact match

“With a multi-national workforce of over 5,700 personnel, DOF is an international group of companies which owns and operates a fleet of modern offshore/subsea vessels, with an…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact 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
7Exact matchRio De Janeiro, BrazilHQ recorded Sep 22, 20261,001-5,0002,427 contacts →

Exact match

“A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchAl-khobar, Saudi ArabiaHQ recorded Sep 22, 20261,001-5,0002,312 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 · Sep 22, 2026 · View company records in RevenueBase
9Exact 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
10Exact matchAbu Dhabi, United Arab EmiratesHQ recorded Sep 22, 20261,001-5,0001,917 contacts →

Exact match

“ZMI Holdings an ADNOC L&S company THE NEW WAVE Transforming the Offshore Energy Industry An integrated service provider offering unparalleled commitment.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchNiterói, BrazilHQ recorded Sep 22, 20261,001-5,0001,847 contacts →

Exact match

“O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Sep 22, 20261,001-5,0001,706 contacts →

Exact match

“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchÇankaya, TürkiyeHQ recorded Sep 22, 2026501-1,0001,501 contacts →

Exact match

“TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.”

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 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
16Exact matchSingaporeHQ recorded Sep 22, 20261,001-5,000805 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 · Sep 22, 2026 · View company records in RevenueBase
17Exact 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
18Exact matchHouston, TX, United StatesHQ recorded Sep 22, 20261,001-5,000744 contacts →

Exact match

“Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchYantai, ChinaHQ recorded Sep 22, 202610001+720 contacts →

Exact match

“Yantai CIMC Raffles Offshore Technology Group Co, Ltd.(“CIMC Raffles”) is a leading offshore engineering and high-end marine equipment group in China, with a strong focus on the…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchDubai, United Arab EmiratesHQ recorded Sep 22, 2026n/a715 contacts →

Exact match

“Established in 1997, we operate an extensive fleet of Offshore Supply Vessels that service the Oil and Gas industry in the Middle East, South East Asia, Africa, India and the Gulf…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchSingaporeHQ recorded Sep 22, 2026201-500674 contacts →

Exact match

“The Pacific Radiance Group of Companies is an established owner and operator of offshore vessels and a provider of subsea services, shipyard services, marine equipment as well as…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Sep 22, 20261,001-5,000635 contacts →

Exact match

“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchMacaé, BrazilHQ recorded Sep 22, 2026501-1,000624 contacts →

Exact match

“A SISTAC é líder no segmento de inspeção, manutenção e reparo offshore na indústria de óleo e gás no Brasil, através de acesso com embarcações de apoio marítimo, mergulhadores…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchSharjah, United Arab EmiratesHQ recorded Sep 22, 2026501-1,000618 contacts →

Exact match

“Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchRio De Janeiro, BrazilHQ recorded Sep 22, 2026501-1,000575 contacts →

Exact match

“Seagems is a Brazilian company specialized in subsea services, a joint venture between two international key players in their markets, Paratus Energy and Sapura Energy.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 25 of 2,327 subsea intervention service providers worldwide

See the full list, filter by size, metro and specialty, and access 25,002 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsea intervention service providers worldwide at a glance

As of Sep 22, 2026
19.1%Verified-email coverage
56.4Average contacts per company
11-50Median size (employees)
3.5%Largest-city concentration · Singapore
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
803
11-50
855
51-200
415
201-500
137
501-1,000
50
1,001-5,000
46
5,001-10,000
7
10001+
9

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 subsea intervention service providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “subsea intervention service providers” 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 25,002 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.

Subsea intervention service providers by location

13 lists · largest first

Every Subsea intervention service providers 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 “subsea intervention service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea intervention service providers are there worldwide?

RevenueBase identified 2,327 company matches for subsea intervention service providers 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?

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

Which country has the most subsea intervention service providers?

The United Kingdom leads with 336 companies, followed by the United States (255) and Norway (146). Every subsea intervention service providers list by country and city is linked on this page.

Which city has the most subsea intervention service providers?

Singapore leads with 82 company records, followed by Aberdeen (81) and Houston (78).

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 25,002 professional contacts with verified work emails tracked across these 2,327 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.