Company lists · Data refreshed September 2026

Top 25 Offshore platform installation services based in the United States

Name: Offshore platform installation services 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 409 companies tracked

RevenueBase identified 409 offshore platform installation services headquartered in the United States as of September 2026 and tracks 65,222 professional contacts across them, including 14,225 with verified work emails and 13,167 with mobile numbers. Houston is the largest hub.

This list covers offshore platform installation services 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

409Companies

65,222Contacts tracked

14,225Verified emails

13,167Mobile numbers

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The 25 largest offshore platform installation services based in the United States

Ranked by team size

Top 25 of 409 offshore platform installation services 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 installation services: 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, LTDIndirect 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	Nabors IndustriesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	5,865
	“Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: company website · checked Sep 5, 2026
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	Worldwide Oilfield MachineIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	635
	“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: company website · checked Sep 5, 2026
12	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
13	Pacific DrillingIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	538
	“On April 15, 2021, Noble Corporation plc completed its acquisition of Pacific Drilling Company LLC.” Source: company website · checked Sep 5, 2026
14	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
15	Sunland Construction, Inc. And AffiliatesIndirect evidence	Eunice, LA, United StatesHQ checked Sep 5, 2026	1,001-5,000	364
	“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: company website · checked Sep 5, 2026
16	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
17	B&e Resources, LLCIndirect 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
18	Crosby Energy ServicesIndirect evidence	Cut Off, LA, United StatesHQ checked Sep 5, 2026	201-500	272
	“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…” Source: company website · checked Sep 5, 2026
19	Offshore Inland Marine & Oilfield Services, INCPartial 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
20	Trendsetter Engineering, INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	259
	“Trendsetter is a global provider of specialized subsea solutions to the oil and gas industry's toughest challenges.” Source: company website · checked Sep 5, 2026
21	Gulfspan Industrial LLCIndirect 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
22	Ballard Marine ConstructionIndirect evidence	Washougal, WA, United StatesHQ checked Sep 5, 2026	51-200	236
	“Ballard Marine Construction (Ballard) is a specialty marine and underwater contractor.” Source: company website · checked Sep 5, 2026
23	Irwin IndustriesPartial evidence	Long Beach, CA, United StatesHQ checked Sep 5, 2026	501-1,000	226
	“Irwin Industries is one of the nation's leading industrial construction and maintenance service providers, serving the onshore and offshore oil & gas, petrochemical, refining…” Source: company website · checked Sep 5, 2026
24	Delmar SystemsPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	207
	“Delmar Systems is the trusted partners to most offshore energy industry’s leaders, delivering innovative and customer-focused anchoring and mooring solutions.” Source: company website · checked Sep 5, 2026
25	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

Showing 25 of 409 offshore platform installation services based in the United States

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Offshore platform installation services based in the United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

HoustonLargest hub · 136 HQs

13,167Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

101

11-50

110

51-200

110

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

13,039

31–60

885

61–90

90–180

180+

286

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 installation services, 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 installation services”. 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 installation services, 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, 14,225 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 installation services by metro

Offshore platform installation services in Houston136

Frequently asked

How many offshore platform installation services are there based in the United States?

RevenueBase identified 409 offshore platform installation services 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 installation services?

Houston leads with 136 headquartered companies, followed by Katy (8) 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 14,225 verified decision-maker contacts tracked across these 409 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.