Company lists · Data refreshed October 2026

Top 25 Deep ocean engineering services worldwide

Name: Deep ocean engineering services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 24, 2026 6,702 companies tracked

RevenueBase identified 6,702 company matches for deep ocean engineering services worldwide as of October 2026 and tracks 248,714 professional contacts across them, including 51,583 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers company matches for deep ocean engineering services 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 24, 2026. Country and city lists for deep ocean engineering services 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 24, 2026 How this list was built

6,702Companies

248,714Contacts tracked

51,583Verified emails

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The 25 largest deep ocean engineering services worldwide

Ranked by team size

Top 25 of 6,702 company matches for deep ocean engineering services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 24, 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	Oceaneering	Exact match	Houston, TX, United StatesHQ recorded Oct 24, 2026	10001+	12,485 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 · Oct 24, 2026 · View company records in RevenueBase
2	Technip Former Company	Exact match	United KingdomHQ recorded Oct 24, 2026	10001+	11,864 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 · Oct 24, 2026 · View company records in RevenueBase
3	SBM Offshore	Exact match	Amsterdam, NetherlandsHQ recorded Oct 24, 2026	5,001-10,000	9,144 contacts →
	Exact match “SBM Offshore is the world’s deepwater ocean-infrastructure expert.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
4	Kongsberg Maritime	Exact match	Kongsberg, NorwayHQ recorded Oct 24, 2026	5,001-10,000	5,813 contacts →
	Exact match “Kongsberg Maritime is your trusted partner in navigating the complexities of the maritime industry.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
5	Seatrium	Exact match	United StatesHQ recorded Oct 24, 2026	10001+	4,979 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 · Oct 24, 2026 · View company records in RevenueBase
6	Deme Group	Exact match	Beveren-kruibeke-zwijndrecht, BelgiumHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
7	VAN Oord	Exact match	3063 Nh, NetherlandsHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
8	Boskalis	Exact match	Papendrecht, NetherlandsHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
9	DOF	Exact match	Bergen, NorwayHQ recorded Oct 24, 2026	5,001-10,000	3,269 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 · Oct 24, 2026 · View company records in RevenueBase
10	Heerema Marine Contractors	Exact match	Leiden, NetherlandsHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
11	Allseas	Exact match	Châtel-saint-denis, United StatesHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
12	OCYAN	Exact match	Rio De Janeiro, BrazilHQ recorded Oct 24, 2026	1,001-5,000	2,328 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 · Oct 24, 2026 · View company records in RevenueBase
13	Oceanica	Exact match	Macaé - Rj, BrazilHQ recorded Oct 24, 2026	1,001-5,000	2,321 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 · Oct 24, 2026 · View company records in RevenueBase
14	MAN Diesel & Turbo	Exact match	Augsburg, GermanyHQ recorded Oct 24, 2026	10001+	2,302 contacts →
	Exact match “MAN Energy Solutions enables its customers to achieve sustainable value creation in the transition towards a carbon neutral future.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
15	Free Lancer	Exact match	BrazilHQ recorded Oct 24, 2026	n/a	2,271 contacts →
	Exact match “Rov company.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
16	Grupo CBO	Exact match	Niterói, BrazilHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
17	Royal IHC	Exact match	Kinderdijk, NetherlandsHQ recorded Oct 24, 2026	1,001-5,000	1,792 contacts →
	Exact match “Royal IHC is a leading supplier of maritime technology and expert craftsmanship.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
18	Helix Energy Solutions Group	Exact match	Houston, TX, United StatesHQ recorded Oct 24, 2026	1,001-5,000	1,771 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 · Oct 24, 2026 · View company records in RevenueBase
19	Tp-Otc	Exact match	Çankaya, TürkiyeHQ recorded Oct 24, 2026	501-1,000	1,766 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 · Oct 24, 2026 · View company records in RevenueBase
20	Sembcorp Marine LTD	Exact match	SingaporeHQ recorded Oct 24, 2026	1,001-5,000	1,620 contacts →
	Exact match “Delivering Sustainable Synergies for Global Possibilities Sembcorp Marine is an integrated brand offering one-stop engineering solutions for the offshore, marine and energy…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
21	Deepocean	Exact match	Oslo, NorwayHQ recorded Oct 24, 2026	1,001-5,000	1,536 contacts →
	Exact match “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
22	CCC Underwater Engineering S.A.L	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Oct 24, 2026	201-500	1,314 contacts →
	Exact match “(Underwater Engineering) S.A.L was established in 1976.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
23	Maersk Supply Service	Exact match	Rio De Janeiro, BrazilHQ recorded Oct 24, 2026	201-500	1,277 contacts →
	Exact match “With more than 50 years of legacy, Maersk Supply Service celebrates a new important milestone: from November 1st, our headquarters are officially located in Brazil.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
24	Aries Marine And Engineering Services	Exact match	United Arab EmiratesHQ recorded Oct 24, 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 24, 2026 · View company records in RevenueBase
25	ASN	Exact match	Les Ulis, FranceHQ recorded Oct 24, 2026	1,001-5,000	1,236 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 · Oct 24, 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 “deep ocean engineering services”. 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 6,702 deep ocean engineering services worldwide

See the full list, filter by size, metro and specialty, and access 51,583 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Deep ocean engineering services worldwide at a glance

As of Oct 24, 2026

20.7%Verified-email coverage

37.1Average contacts per company

11-50Median size (employees)

3.1%Largest-city concentration · Singapore

Oct 24, 2026Page data refreshed

Companies by employee count

1-10

2,845

11-50

2,410

51-200

912

201-500

300

501-1,000

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 deep ocean engineering services are linked below.
What qualifies: Company records worldwide whose business descriptions match “deep ocean engineering services” 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 51,583 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 24, 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.

Deep ocean engineering services by location

43 lists · largest first

Every Deep ocean engineering services 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 “deep ocean engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many deep ocean engineering services are there worldwide?

RevenueBase identified 6,702 company matches for deep ocean engineering services 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?

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

Which country has the most deep ocean engineering services?

The United States leads with 752 companies, followed by the United Kingdom (710) and Norway (291). Every deep ocean engineering services list by country and city is linked on this page.

Which city has the most deep ocean engineering services?

Singapore leads with 205 company records, followed by Houston (108) and Aberdeen (92).

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 51,583 professional contacts with verified work emails tracked across these 6,702 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 24, 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.