Company lists · Data refreshed September 2026

Top 25 Offshore construction companies worldwide

Name: Offshore construction companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 4,008 companies tracked

RevenueBase identified 4,008 offshore construction companies worldwide as of September 2026 and tracks 352,402 professional contacts across them, including 70,562 with verified work emails and 0 with mobile numbers. The United States is the largest market and Singapore the largest hub.

This list covers offshore construction companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for offshore construction companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

4,008Companies

352,402Contacts tracked

70,562Verified emails

0Mobile numbers

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The 25 largest offshore construction companies worldwide

Ranked by team size

Top 25 of 4,008 offshore construction companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to offshore construction companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Saipem	Strong evidence	Milan, ItalyHQ checked Sep 17, 2026	10001+	34,095 contacts →
	Strong evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 17, 2026
2	Mcdermott International, LTD	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	20,135 contacts →
	Partial evidence “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	SBM Offshore	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 17, 2026	5,001-10,000	8,478 contacts →
	Partial evidence “SBM Offshore is the world’s deepwater ocean-infrastructure expert.” Source: RevenueBase Database · checked Sep 17, 2026
4	Nmdc Energy	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	10001+	6,786 contacts →
	Indirect evidence “Established in 1973, NMDC Energy (formerly NPCC) is a leading EPC company working in the energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
5	Lamprell	Partial evidence	Sharjah, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	6,080 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
6	Noble Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	5,601 contacts →
	Partial evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
7	Target Engineering Construction CO LLC	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	4,466 contacts →
	Partial evidence “Target Engineering Construction Company was established in 1975 and operates through its specialized divisions – Power, Oil and Gas Division and Civil & Marine Division.” Source: RevenueBase Database · checked Sep 17, 2026
8	Deme Group	Partial evidence	Beveren-kruibeke-zwijndrecht, BelgiumHQ checked Sep 17, 2026	5,001-10,000	4,395 contacts →
	Partial evidence “DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, dredging and marine infrastructure, and environmental remediation.” Source: RevenueBase Database · checked Sep 17, 2026
9	VAN Oord	Partial evidence	3063 Nh, NetherlandsHQ checked Sep 17, 2026	5,001-10,000	4,364 contacts →
	Partial evidence “Van Oord is a leading international marine contractor focusing on dredging, infrastructure and offshore energy projects.” Source: RevenueBase Database · checked Sep 17, 2026
10	Cotemar	Indirect evidence	Ciudad Del Carmen, MexicoHQ checked Sep 17, 2026	5,001-10,000	4,138 contacts →
	Indirect evidence “We are Mexican company specialized in services for the oil industry since 1979.” Source: RevenueBase Database · checked Sep 17, 2026
11	ENPPI	Partial evidence	Nasr City 1, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,370 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
12	Murphy	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	3,095 contacts →
	Partial evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 17, 2026
13	Altrad	Indirect evidence	Montpellier, FranceHQ checked Sep 17, 2026	10001+	3,056 contacts →
	Indirect evidence “ALTRAD AT A GLANCE Altrad is a world leader in the provision of industrial services, generating high-added value solutions principally for the Energy, Power Generation, Oil & Gas…” Source: RevenueBase Database · checked Sep 17, 2026
14	DOF	Partial evidence	Bergen, NorwayHQ checked Sep 17, 2026	5,001-10,000	2,942 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
15	Gran Services S.A	Indirect evidence	Macaé, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,752 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	FTI	Partial evidence	Menasha, WI, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,741 contacts →
	Partial evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 17, 2026
17	Heerema Marine Contractors	Partial evidence	Leiden, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	2,643 contacts →
	Partial evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
18	Estrutural	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,461 contacts →
	Indirect evidence “Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Source: RevenueBase Database · checked Sep 17, 2026
19	Brasfels	Indirect evidence	Angra Dos Reis, BrazilHQ checked Sep 17, 2026	5,001-10,000	2,370 contacts →
	Indirect evidence “Empresa multinacional na área de construção e reparos de navios e plataformas.” Source: RevenueBase Database · checked Sep 17, 2026
20	Michels Corporation	Partial evidence	Brownsville, WI, United StatesHQ checked Sep 17, 2026	10001+	2,339 contacts →
	Partial evidence “Established in 1959 in Brownsville, WI, Michels is an international leader in energy and infrastructure construction.” Source: RevenueBase Database · checked Sep 17, 2026
21	Zamil Offshore Services Company	Partial evidence	Al-khobar, Saudi ArabiaHQ checked Sep 17, 2026	1,001-5,000	2,312 contacts →
	Partial evidence “Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Source: RevenueBase Database · checked Sep 17, 2026
22	Chantiers DE L'atlantique	Partial evidence	Saint-nazaire, FranceHQ checked Sep 17, 2026	1,001-5,000	2,004 contacts →
	Partial evidence “Installée sur la façade Atlantique, Chantiers de l’Atlantique est une entreprise de construction maritime (paquebots, sous-stations…) et de services aux flottes.” Source: RevenueBase Database · checked Sep 17, 2026
23	Grupo CBO	Indirect evidence	Niterói, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,847 contacts →
	Indirect evidence “O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.” Source: RevenueBase Database · checked Sep 17, 2026
24	Groupe Ponticelli Frères	Indirect evidence	FranceHQ checked Sep 17, 2026	5,001-10,000	1,829 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
25	Helix Energy Solutions Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,706 contacts →
	Partial evidence “Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: offshore construction companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names offshore construction companies.
Partial evidence: Its own public description names part of offshore construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore construction companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,008 offshore construction companies worldwide

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Offshore construction companies worldwide at a glance

As of Sep 17, 2026

20.0%Verified-email coverage

87.9Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Singapore

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

856

11-50

1,301

51-200

974

201-500

433

501-1,000

187

1,001-5,000

183

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among offshore construction companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 31 countries, largest first: the United States, the United Kingdom, the United Arab Emirates, Brazil, Nigeria, the Netherlands, Norway, India, Singapore, Italy and 21 more. Country and city lists for offshore construction companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “offshore construction companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names offshore construction companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among offshore construction companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 70,562 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Offshore construction companies by location

33 lists · largest first

Every Offshore construction companies 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names offshore construction companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many offshore construction companies are there worldwide?

RevenueBase identified 4,008 offshore construction companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Saipem, headquartered in Milan, tops this list with the largest team on record.

Which country has the most offshore construction companies?

The United States leads with 539 companies, followed by the United Kingdom (406) and the United Arab Emirates (243). Every offshore construction companies list by country and city is linked on this page.

Which city has the most offshore construction companies?

Singapore leads with 145 headquartered companies, followed by Houston (131) and Abu Dhabi (72).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 70,562 verified decision-maker contacts tracked across these 4,008 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.