Company lists · Data refreshed September 2026

Top 25 Offshore platform construction companies based in the United States

Name: Offshore platform 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 5, 2026 275 companies tracked

RevenueBase identified 275 offshore platform construction companies headquartered in the United States as of September 2026 and tracks 54,397 professional contacts across them, including 12,029 with verified work emails and 10,085 with mobile numbers. Houston is the largest hub.

This list covers offshore platform 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

275Companies

54,397Contacts tracked

12,029Verified emails

10,085Mobile numbers

Unlock all 275 companies Free signup · no credit card · 500 free credits

The 25 largest offshore platform construction companies based in the United States

Ranked by team size

Top 25 of 275 offshore platform construction companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names offshore platform construction companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Mcdermott International, LTDPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	20,135
	“McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: company website · checked Sep 5, 2026
2	Noble CorporationPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	5,001-10,000	5,601
	“Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: company website · checked Sep 5, 2026
3	Valaris LimitedIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	5,001-10,000	3,173
	“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: company website · checked Sep 5, 2026
4	OIL States InternationalIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	5,001-10,000	2,215
	“Oil States International, Inc.” Source: company website · checked Sep 5, 2026
5	Helix Energy Solutions GroupPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,706
	“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Source: company website · checked Sep 5, 2026
6	Audubon CompaniesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,488
	“Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: company website · checked Sep 5, 2026
7	Dril-QuipPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,387
	“Dril-Quip is part of Innovex, a unique energy industrial platform.” Source: company website · checked Sep 5, 2026
8	Modec International INCPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	685
	“MODEC is a general contractor specializing in engineering, procurement, construction and installation of floating production systems including Floating Production Storage and…” Source: company website · checked Sep 5, 2026
9	Atwood OceanicsIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	639
	“Atwood Oceanics, Inc.” Source: company website · checked Sep 5, 2026
10	Dynamic Industries, INCIndirect evidence	New Orleans, LA, United StatesHQ checked Sep 5, 2026	1,001-5,000	567
	Source: company website · checked Sep 5, 2026
11	Matrix ServiceIndirect evidence	Tulsa, OK, United StatesHQ checked Sep 5, 2026	1,001-5,000	492
	“Matrix Service is a subsidiary of Matrix Service Company (NASDAQ: MTRX).” Source: company website · checked Sep 5, 2026
12	Performance Energy Services, LLCPartial evidence	Houma, LA, United StatesHQ checked Sep 5, 2026	501-1,000	305
	“Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.” Source: company website · checked Sep 5, 2026
13	B&e Resources, LLCPartial evidence	Beaumont, TX, United StatesHQ checked Sep 5, 2026	501-1,000	286
	“B&E Resources is an oil field service company specializing in industrial construction and custom fabrication.” Source: company website · checked Sep 5, 2026
14	Offshore Inland Marine & Oilfield Services, INCStrong evidence	Pensacola, FL, United StatesHQ checked Sep 5, 2026	51-200	266
	“Offshore Inland Marine & Oilfield Services, Inc.(OIMO) corporate headquarters in Pensacola,FL provides a full range of Drilling Rig services and construction support activities…” Source: company website · checked Sep 5, 2026
15	Gulfspan Industrial LLCPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	251
	“Gulfspan Industrial, LLC is a mechanical construction and industrial services company that specializes in performing turnarounds, capital projects, and maintenance.” Source: company website · checked Sep 5, 2026
16	Gulf IslandIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	193
	“Gulf Island is a leading fabricator of complex steel structures and modules and provider of specialty services, including project management, hookup, commissioning, repair…” Source: company website · checked Sep 5, 2026
17	Zentech IncorporatedIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	181
	“Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Source: company website · checked Sep 5, 2026
18	Deepsea TechnologiesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	166
	“Deepsea Technologies, Inc.(DTI) Engineers and Manufactures a wide range of products and equipment used in subsea oil & gas field development projects.” Source: company website · checked Sep 5, 2026
19	Bellingham MarinePartial evidence	Jacksonville, FL, United StatesHQ checked Sep 5, 2026	201-500	163
	“Bellingham Marine is an established leader in the marine construction world.” Source: company website · checked Sep 5, 2026
20	Loadmaster IndustriesIndirect evidence	Broussard, LA, United StatesHQ checked Sep 5, 2026	51-200	146
	“Loadmaster Industries is a diversified manufacturing, engineering, design, and field services company with 30 years of experience in the global energy and industrial markets.” Source: company website · checked Sep 5, 2026
21	BAY LTDPartial evidence	Corpus Christi, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	131
	“Bay Ltd, with offices and operations throughout the U.S, Latin America, Canada, and other International locations, is a full-service multi-discipline construction, fabrication…” Source: company website · checked Sep 5, 2026
22	Petrolog GroupIndirect evidence	Houston, United StatesHQ checked Sep 5, 2026	501-1,000	131
	“Petrolog brings energy to the world as an integrated provider of solutions for the entire oil and gas lifecycle.” Source: company website · checked Sep 5, 2026
23	Holloman CorporationPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	125
	“Holloman Corporation is an Engineering, Procurement, and Construction company with capabilities to design, build, and service energy-related projects on a global level.” Source: company website · checked Sep 5, 2026
24	Perc EngineeringIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	124
	“PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Source: company website · checked Sep 5, 2026
25	Bisso MarinePartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	118
	“BISSO MARINE is a subsea & offshore midstream infrastructure contractor that has been providing unsurpassed service and quality to the marine and energy industries since 1890.” Source: company website · checked Sep 5, 2026

Showing 25 of 275 offshore platform construction companies based in the United States

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Offshore platform construction companies based in the United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

HoustonLargest hub · 104 HQs

10,085Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

11,059

31–60

693

61–90

90–180

180+

265

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 platform construction companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 platform construction companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among offshore platform 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 an evidence 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, 12,029 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 5, 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 platform construction companies by metro

Offshore platform construction companies in Houston104

Frequently asked

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

RevenueBase identified 275 offshore platform 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 platform construction companies?

Houston leads with 104 headquartered companies, followed by Katy (7) and New Iberia (7).

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 12,029 verified decision-maker contacts tracked across these 275 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 5, 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.