Company lists · Data refreshed September 2026

Top 25 Offshore construction companies based in the United States

Name: Offshore construction companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 539 companies tracked

RevenueBase identified 539 offshore construction companies headquartered in the United States as of September 2026 and tracks 65,407 professional contacts across them, including 16,572 with verified work emails. Houston is the largest hub.

This list covers offshore construction companies headquartered in the United States, 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.

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

539Companies

65,407Contacts tracked

16,572Verified emails

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The 25 largest offshore construction companies based in the United States

Ranked by team size

Top 25 of 539 offshore construction companies based in the United States, 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	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
2	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
3	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
4	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
5	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
6	Audubon Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,488 contacts →
	Indirect evidence “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
7	Rowan Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,182 contacts →
	Indirect evidence “We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…” Source: RevenueBase Database · checked Sep 17, 2026
8	KBR Energo Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	789 contacts →
	Partial evidence “Energo Engineering is a KBR Company that provides the full package of structural integrity management (SIM) and advanced structural engineering services for offshore floating and…” Source: RevenueBase Database · checked Sep 17, 2026
9	Modec International INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	685 contacts →
	Partial evidence “MODEC is a general contractor specializing in engineering, procurement, construction and installation of floating production systems including Floating Production Storage and…” Source: RevenueBase Database · checked Sep 17, 2026
10	Vepica	Indirect evidence	Katy, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	680 contacts →
	Indirect evidence “Vepica is a multinational engineering company with more than 53 years experience in the energy, industrial, infrastructure and petrochemical sectors.” Source: RevenueBase Database · checked Sep 17, 2026
11	Willbros	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	665 contacts →
	Partial evidence “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Source: RevenueBase Database · checked Sep 17, 2026
12	Atwood Oceanics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	639 contacts →
	Indirect evidence “Atwood Oceanics, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
13	GIS	Indirect evidence	Galliano, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	612 contacts →
	Indirect evidence “Established in 1948 in Grand Isle, LA, GIS began as a modest company serving the commercial fishing industry.” Source: RevenueBase Database · checked Sep 17, 2026
14	Manson Construction CO	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	501-1,000	592 contacts →
	Partial evidence “Manson is one of the nation’s leading heavy civil marine construction and dredging companies.” Source: RevenueBase Database · checked Sep 17, 2026
15	Dynamic Industries, INC	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	567 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	Matrix Service	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	1,001-5,000	492 contacts →
	Indirect evidence “Matrix Service is a subsidiary of Matrix Service Company (NASDAQ: MTRX).” Source: RevenueBase Database · checked Sep 17, 2026
17	The Shaw Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	462 contacts →
	Indirect evidence “With over 1.9 million square feet of fabrication and manufacturing capacity worldwide, The Shaw Group offers premier project delivery services, module fabrication (including…” Source: RevenueBase Database · checked Sep 17, 2026
18	Delta Constructors	Partial evidence	Anchorage, AK, United StatesHQ checked Sep 17, 2026	501-1,000	380 contacts →
	Partial evidence “We are a full-service construction and fabrication group serving industrial clients of all sizes in water, wastewater, petroleum, gas processing and energy projects.” Source: RevenueBase Database · checked Sep 17, 2026
19	Greenberry Industrial	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 17, 2026	1,001-5,000	380 contacts →
	Indirect evidence “Greenberry Industrial is an award-winning, full-service industrial contractor and fabricator serving high-tech, oil & gas, petrochemical, pulp & paper, power & energy, renewable…” Source: RevenueBase Database · checked Sep 17, 2026
20	Sunland Construction, Inc. And Affiliates	Partial evidence	Eunice, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	364 contacts →
	Partial evidence “Our Mission: To be the premier provider for energy related construction services through a commitment to excellence in safety, production, and quality, with the resolve to…” Source: RevenueBase Database · checked Sep 17, 2026
21	Performance Energy Services, LLC	Partial evidence	Houma, LA, United StatesHQ checked Sep 17, 2026	501-1,000	305 contacts →
	Partial evidence “Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.” Source: RevenueBase Database · checked Sep 17, 2026
22	The Roberts Company	Indirect evidence	Winterville, NC, United StatesHQ checked Sep 17, 2026	501-1,000	305 contacts →
	Indirect evidence “Founded in 1977 as The Roberts Company, Roberts has grown from a small contractor to a large full service constructor and fabricator.” Source: RevenueBase Database · checked Sep 17, 2026
23	Samuel Engineering, INC	Partial evidence	Greenwood Village, CO, United StatesHQ checked Sep 17, 2026	201-500	293 contacts →
	Partial evidence “Samuel is a multi-discipline engineering, procurement, fabrication, and construction company.” Source: RevenueBase Database · checked Sep 17, 2026
24	B&e Resources, LLC	Partial evidence	Beaumont, TX, United StatesHQ checked Sep 17, 2026	501-1,000	286 contacts →
	Partial evidence “B&E Resources is an oil field service company specializing in industrial construction and custom fabrication.” Source: RevenueBase Database · checked Sep 17, 2026
25	Spitzer Industries, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	285 contacts →
	Indirect evidence “Houston-based Spitzer Industries, Inc.” 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 539 offshore construction companies based in the United States

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Offshore construction companies based in the United States at a glance

As of Sep 17, 2026

25.3%Verified-email coverage

121.3Average contacts per company

11-50Median size (employees)

24.3%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

134

11-50

148

51-200

140

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 539 companies.

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.
What qualifies: Companies headquartered in the United States 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. Companies headquartered outside United States are excluded even when they keep an office there.
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, 16,572 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 metro

Offshore construction companies in Houston131

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 based in the United States?

RevenueBase identified 539 offshore construction companies headquartered in the United States 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?

Mcdermott International, LTD, headquartered in Houston, tops this list with the largest team on record.

Which city has the most offshore construction companies?

Houston leads with 131 headquartered companies, followed by Houma (9) and Katy (9).

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 16,572 verified decision-maker contacts tracked across these 539 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.