Company lists · Data refreshed September 2026

Top 25 Offshore construction contractors based in the United States

Name: Offshore construction contractors 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 599 companies tracked

RevenueBase identified 599 company matches for offshore construction contractors associated with the United States as of September 2026 and tracks 87,168 professional contacts across them, including 20,394 with verified work emails. Houston is the largest hub.

This list covers company matches for offshore construction contractors associated with the United States, 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 17, 2026.

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 17, 2026 How this list was built

599Companies

87,168Contacts tracked

20,394Verified emails

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The 25 largest offshore construction contractors based in the United States

Ranked by team size

Top 25 of 599 company matches for offshore construction contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Mcdermott International, LTD	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	20,135 contacts →
	Exact match “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Oceaneering	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	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 17, 2026 · View company records in RevenueBase
3	EXPRO	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
4	Noble Corporation	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	5,001-10,000	5,601 contacts →
	Exact match “Noble is a leading offshore drilling contractor for the oil and gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	FMC Technologies	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	4,749 contacts →
	Exact match “FMC Technologies is now TechnipFMC.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Valaris Limited	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	5,001-10,000	3,173 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	OIL States International	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	5,001-10,000	2,215 contacts →
	Exact match “Oil States International, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Helix Energy Solutions Group	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
9	Weeks Marine, INC	Exact match	Cranford, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	847 contacts →
	Exact match “Founded in 1919, Weeks Marine, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	KBR Energo Engineering	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	n/a	789 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Modec International INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	685 contacts →
	Exact match “MODEC is a general contractor specializing in engineering, procurement, construction and installation of floating production systems including Floating Production Storage and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Willbros	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	665 contacts →
	Exact match “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Atwood Oceanics	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	639 contacts →
	Exact match “Atwood Oceanics, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Manson Construction CO	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	501-1,000	592 contacts →
	Exact match “Manson is one of the nation’s leading heavy civil marine construction and dredging companies.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Dynamic Industries, INC	Exact match	New Orleans, LA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	567 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Pacific Drilling	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	538 contacts →
	Exact match “On April 15, 2021, Noble Corporation plc completed its acquisition of Pacific Drilling Company LLC.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Sunland Construction, Inc. And Affiliates	Exact match	Eunice, LA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	364 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Performance Energy Services, LLC	Exact match	Houma, LA, United StatesHQ recorded Sep 17, 2026	501-1,000	305 contacts →
	Exact match “Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	B&e Resources, LLC	Exact match	Beaumont, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	286 contacts →
	Exact match “B&E Resources is an oil field service company specializing in industrial construction and custom fabrication.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Crosby Energy Services	Exact match	Cut Off, LA, United StatesHQ recorded Sep 17, 2026	201-500	272 contacts →
	Exact match “Founded as C&D Wireline in 1968, with C&D Production Specialist joining the business in 1993, today Crosby Energy Services is a certified Women’s Business Enterprise National…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Offshore Inland Marine & Oilfield Services, INC	Exact match	Pensacola, FL, United StatesHQ recorded Sep 17, 2026	51-200	266 contacts →
	Exact match “Offshore Inland Marine & Oilfield Services, Inc.(OIMO) corporate headquarters in Pensacola,FL provides a full range of Drilling Rig services and construction support activities…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Trendsetter Engineering, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	259 contacts →
	Exact match “Trendsetter is a global provider of specialized subsea solutions to the oil and gas industry's toughest challenges.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Gulfspan Industrial LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	251 contacts →
	Exact match “Gulfspan Industrial, LLC is a mechanical construction and industrial services company that specializes in performing turnarounds, capital projects, and maintenance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Ballard Marine Construction	Exact match	Washougal, WA, United StatesHQ recorded Sep 17, 2026	51-200	236 contacts →
	Exact match “Ballard Marine Construction (Ballard) is a specialty marine and underwater contractor.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Seatrium Amfels, INC	Exact match	Brownsville, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	229 contacts →
	Exact match “Seatrium AmFELS is an industry pioneer committed to sustainability by providing cleaner offshore & marine solutions, offshore renewables, and new energy, generating long-term…” Recorded in the RevenueBase company graph · Sep 17, 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 “offshore construction contractors”. 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 599 offshore construction contractors based in the United States

See the full list, filter by size, metro and specialty, and access 20,394 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore construction contractors based in the United States at a glance

As of Sep 17, 2026

23.4%Verified-email coverage

145.5Average contacts per company

11-50Median size (employees)

24.5%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

165

11-50

184

51-200

146

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 599 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “offshore construction contractors” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 20,394 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 17, 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.

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 “offshore construction contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore construction contractors are there based in the United States?

RevenueBase identified 599 company matches for offshore construction contractors associated with the United States 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?

Mcdermott International, LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore construction contractors?

Houston leads with 147 company records, followed by Katy (11) and Houma (10).

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 20,394 professional contacts with verified work emails tracked across these 599 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 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 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.