Company lists · Data refreshed September 2026

Top 25 Subsea consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 8,218 companies tracked

RevenueBase identified 8,218 company matches for subsea consulting firms worldwide as of September 2026 and tracks 300,935 professional contacts across them, including 54,952 with verified work emails. The United Kingdom is the largest market and Houston the largest hub.

This list covers company matches for subsea consulting firms 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 29, 2026. Country and city lists for subsea consulting firms 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 29, 2026 How this list was built

8,218Companies

300,935Contacts tracked

54,952Verified emails

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The 25 largest subsea consulting firms worldwide

Ranked by team size

Top 25 of 8,218 company matches for subsea consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	Saipem	Exact match	Milan, ItalyHQ recorded Sep 29, 2026	10001+	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 29, 2026 · View company records in RevenueBase
2	Amec Foster Wheeler	Exact match	Aberdeen, United KingdomHQ recorded Sep 29, 2026	10001+	14,368 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Technip Former Company	Exact match	United KingdomHQ recorded Sep 29, 2026	10001+	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 29, 2026 · View company records in RevenueBase
4	EXPRO	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	5,001-10,000	6,466 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 29, 2026 · View company records in RevenueBase
5	Lamprell	Exact match	Sharjah, United Arab EmiratesHQ recorded Sep 29, 2026	5,001-10,000	6,080 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 29, 2026 · View company records in RevenueBase
6	Seatrium	Exact match	United StatesHQ recorded Sep 29, 2026	10001+	4,522 contacts →
	Exact match “A Premier Global Player with Deep Engineering Expertise in the offshore, marine and energy industries Engineering our Future Together.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	ENPPI	Exact match	Nasr City 1, United StatesHQ recorded Sep 29, 2026	1,001-5,000	3,370 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	DOF	Exact match	Bergen, NorwayHQ recorded Sep 29, 2026	5,001-10,000	2,942 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 29, 2026 · View company records in RevenueBase
9	Gran Services S.A	Exact match	Macaé, BrazilHQ recorded Sep 29, 2026	1,001-5,000	2,752 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Heerema Marine Contractors	Exact match	Leiden, NetherlandsHQ recorded Sep 29, 2026	1,001-5,000	2,643 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 29, 2026 · View company records in RevenueBase
11	OCYAN	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 29, 2026	1,001-5,000	2,427 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 29, 2026 · View company records in RevenueBase
12	Free Lancer	Exact match	BrazilHQ recorded Sep 29, 2026	n/a	2,224 contacts →
	Exact match “Rov company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Oceanica	Exact match	Macaé - Rj, BrazilHQ recorded Sep 29, 2026	1,001-5,000	2,213 contacts →
	Exact match “OCEÂNICA is a Brazilian company dedicated to providing services and engineering technology solutions for companies with underwater activities” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Aarvi Encon	Exact match	Mumbai, IndiaHQ recorded Sep 29, 2026	5,001-10,000	1,890 contacts →
	Exact match “Aarvi Encon has established it's leadership in providing Engineering Consultancy and Technical Assistance to Oil & Gas, Refinery, Petrochemical, Pipelines, Power & Infrastructure…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Grupo CBO	Exact match	Niterói, BrazilHQ recorded Sep 29, 2026	1,001-5,000	1,847 contacts →
	Exact match “O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Helix Energy Solutions Group	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,706 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 29, 2026 · View company records in RevenueBase
17	Tp-Otc	Exact match	Çankaya, TürkiyeHQ recorded Sep 29, 2026	501-1,000	1,501 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 29, 2026 · View company records in RevenueBase
18	RENCO	Exact match	Pesaro, ItalyHQ recorded Sep 29, 2026	1,001-5,000	1,494 contacts →
	Exact match “Renco S.p.A, an Italian company founded in 1979, is continually committed to providing its Clients with sound business solutions in an ever increasingly complex and challenging…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Deepocean	Exact match	Oslo, NorwayHQ recorded Sep 29, 2026	1,001-5,000	1,375 contacts →
	Exact match “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Dragados Offshore	Exact match	11510 Puerto Real, SpainHQ recorded Sep 29, 2026	1,001-5,000	1,348 contacts →
	Exact match “Founded in 1972, Dragados Offshore S.A.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	CCC Underwater Engineering S.A.L	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Sep 29, 2026	201-500	1,279 contacts →
	Exact match “(Underwater Engineering) S.A.L was established in 1976.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Abraj Energy Services	Exact match	Muscat, OmanHQ recorded Sep 29, 2026	1,001-5,000	1,244 contacts →
	Exact match “Abraj Energy Services ("Abraj"), was founded in May 2006 and has taken major strides.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	AL Turki Enterprises L.L.C	Exact match	United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,226 contacts →
	Exact match “At Al Turki’s Oil and Gas Division, we carry out multi-disciplined Engineering Design, Procurement and Construction service in the southern region of Oman with our Off-plot…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Aries Marine And Engineering Services	Exact match	United Arab EmiratesHQ recorded Sep 29, 2026	1,001-5,000	1,216 contacts →
	Exact match “Aries is the largest Engineering, Inspection & Maintenance firm in the Middle East.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Zuhair Fayez	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 29, 2026	1,001-5,000	1,113 contacts →
	Exact match “Zuhair Fayez stands as the region's foremost engineering and consulting firm, renowned for our innovative approach in architecture, project management, and oil and gas services.” Recorded in the RevenueBase company graph · Sep 29, 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 “subsea consulting firms”. 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 8,218 subsea consulting firms worldwide

See the full list, filter by size, metro and specialty, and access 54,952 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsea consulting firms worldwide at a glance

As of Sep 29, 2026

18.3%Verified-email coverage

36.6Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,695

11-50

2,642

51-200

1,178

201-500

378

501-1,000

143

1,001-5,000

115

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 subsea consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “subsea consulting firms” 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 54,952 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 29, 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 consulting firms by location

53 lists · largest first

Every Subsea 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 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 consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea consulting firms are there worldwide?

RevenueBase identified 8,218 company matches for subsea consulting firms 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 subsea consulting firms?

The United Kingdom leads with 980 companies, followed by the United States (973) and Nigeria (407). Every subsea consulting firms list by country and city is linked on this page.

Which city has the most subsea consulting firms?

Houston leads with 272 company records, followed by Singapore (190) and Aberdeen (156).

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 54,952 professional contacts with verified work emails tracked across these 8,218 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 29, 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.