Company lists · Data refreshed September 2026

Top 25 Subsea installation contractors based in the United States

Name: Subsea installation 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 18, 2026 221 companies tracked

RevenueBase identified 221 subsea installation contractors headquartered in the United States as of September 2026 and tracks 18,815 professional contacts across them, including 4,809 with verified work emails. Houston is the largest hub.

This list covers subsea installation contractors 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 18, 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 18, 2026 86% judged on-target in blind review

221Companies

18,815Contacts tracked

4,809Verified emails

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The 25 largest subsea installation contractors based in the United States

Ranked by team size

Top 25 of 221 subsea installation contractors based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to subsea installation contractors: 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	EXPRO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	5,001-10,000	6,466 contacts →
	Indirect evidence “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Source: RevenueBase Database · checked Sep 18, 2026
2	Helix Energy Solutions Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,706 contacts →
	Indirect 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 18, 2026
3	Modec International INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	201-500	685 contacts →
	Strong 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 18, 2026
4	Dynamic Industries, INC	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 18, 2026	1,001-5,000	567 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
5	Performance Energy Services, LLC	Indirect evidence	Houma, LA, United StatesHQ checked Sep 18, 2026	501-1,000	305 contacts →
	Indirect 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 18, 2026
6	Trendsetter Engineering, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	201-500	259 contacts →
	Partial evidence “Trendsetter is a global provider of specialized subsea solutions to the oil and gas industry's toughest challenges.” Source: RevenueBase Database · checked Sep 18, 2026
7	Ballard Marine Construction	Partial evidence	Washougal, WA, United StatesHQ checked Sep 18, 2026	51-200	236 contacts →
	Partial evidence “Ballard Marine Construction (Ballard) is a specialty marine and underwater contractor.” Source: RevenueBase Database · checked Sep 18, 2026
8	Delmar Systems	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	201-500	207 contacts →
	Indirect evidence “Delmar Systems is the trusted partners to most offshore energy industry’s leaders, delivering innovative and customer-focused anchoring and mooring solutions.” Source: RevenueBase Database · checked Sep 18, 2026
9	Underwater Construction Corporation	Indirect evidence	Essex, CT, United StatesHQ checked Sep 18, 2026	201-500	190 contacts →
	Indirect evidence “Since 1969, Underwater Construction Corporation (UCC) has been a leading provider of underwater services to commercial and government facilities.” Source: RevenueBase Database · checked Sep 18, 2026
10	Aqueos Corporation	Partial evidence	Broussard, LA, United StatesHQ checked Sep 18, 2026	201-500	175 contacts →
	Partial evidence “Aqueos is a 'World Class Subsea Service Provider℠' with our core values being a commitment to “excellence” and our dedication to an “accident-free” workplace.” Source: RevenueBase Database · checked Sep 18, 2026
11	Phoenix International Holdings, INC	Indirect evidence	Largo, United StatesHQ checked Sep 18, 2026	201-500	170 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
12	Deepsea Technologies	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	51-200	166 contacts →
	Partial evidence “Deepsea Technologies, Inc.(DTI) Engineers and Manufactures a wide range of products and equipment used in subsea oil & gas field development projects.” Source: RevenueBase Database · checked Sep 18, 2026
13	PRT Offshore An Expro Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	51-200	155 contacts →
	Indirect evidence “PRT Offshore, an Expro company, provides high-quality oilfield rental equipment and services for the global offshore industry.” Source: RevenueBase Database · checked Sep 18, 2026
14	Petrolog Group	Indirect evidence	Houston, United StatesHQ checked Sep 18, 2026	501-1,000	131 contacts →
	Indirect evidence “Petrolog brings energy to the world as an integrated provider of solutions for the entire oil and gas lifecycle.” Source: RevenueBase Database · checked Sep 18, 2026
15	Bisso Marine	Strong evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	201-500	118 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 18, 2026
16	Bluefin Field Services	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 18, 2026	51-200	111 contacts →
	Indirect evidence “BlueFin, a 100% employee-owned, GATE Energy company, is the field services arm of GATE Energy.” Source: RevenueBase Database · checked Sep 18, 2026
17	Champagne Energy Solutions	Indirect evidence	Houma, LA, United StatesHQ checked Sep 18, 2026	51-200	106 contacts →
	Indirect evidence “As the youngest active dive vessels in the Gulf of Mexico, we strive to safely deliver service with fervent integrity and determination.” Source: RevenueBase Database · checked Sep 18, 2026
18	Dsds Deep SEA Development Services, INC - Dsds	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	11-50	101 contacts →
	Partial evidence “Deep Sea Development Services Inc.(DSDS) is a Houston-based service company focused on subsea and deepwater development projects The company was formed in 1996 to meet the need…” Source: RevenueBase Database · checked Sep 18, 2026
19	Mach Energy Services LLC	Strong evidence	Okarche, OK, United StatesHQ checked Sep 18, 2026	201-500	93 contacts →
	Strong evidence “Mach Energy Services LLC is a full-service energy construction contractor specializing in the installation, maintenance, and repair of underground pipelines and associated…” Source: RevenueBase Database · checked Sep 18, 2026
20	Deepocean US	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	51-200	81 contacts →
	Partial evidence “DeepOcean is the leading, subsea services provider, servicing any equipment with specialized expertise.” Source: RevenueBase Database · checked Sep 18, 2026
21	Bordelon Marine	Partial evidence	Houma, LA, United StatesHQ checked Sep 18, 2026	51-200	79 contacts →
	Partial evidence “Bordelon Marine is a leading provider of offshore support and subsea services operating in the U.S.” Source: RevenueBase Database · checked Sep 18, 2026
22	Ocean Edge Services, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	51-200	74 contacts →
	Partial evidence “OES has established itself as a leader in the subsea hydraulic controls sector of the the Oil & Gas industry.” Source: RevenueBase Database · checked Sep 18, 2026
23	Hydra Subsea & Offshore Construction	Partial evidence	Sugar Land, TX, United StatesHQ checked Sep 18, 2026	51-200	73 contacts →
	Partial evidence “Subsea Construction” Source: RevenueBase Database · checked Sep 18, 2026
24	Koil Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	51-200	57 contacts →
	Partial evidence “Koil Energy is a leading energy services company offering subsea equipment and support services to the world’s energy and offshore industries.” Source: RevenueBase Database · checked Sep 18, 2026
25	Midco Diving & Marine Services, INC	Indirect evidence	Rapid City, SD, United StatesHQ checked Sep 18, 2026	11-50	48 contacts →
	Indirect evidence “Midco Diving is a contracting & marine services company performing professional dive services worldwide.” Source: RevenueBase Database · checked Sep 18, 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: subsea installation contractors. 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 subsea installation contractors.
Partial evidence: Its own public description names part of subsea installation contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea installation contractors. 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 221 subsea installation contractors based in the United States

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Subsea installation contractors based in the United States at a glance

As of Sep 18, 2026

25.6%Verified-email coverage

85.1Average contacts per company

11-50Median size (employees)

29.9%Largest-city concentration · Houston

Sep 18, 2026Page data 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+

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 221 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 subsea installation contractors, 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 “subsea installation contractors”. 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 subsea installation contractors), 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 subsea installation contractors, 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, 4,809 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 18, 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.

Subsea installation contractors by metro

Subsea installation contractors in Houston66

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 subsea installation contractors, 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 subsea installation contractors are there based in the United States?

RevenueBase identified 221 subsea installation contractors 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?

EXPRO, headquartered in Houston, tops this list with the largest team on record.

Which city has the most subsea installation contractors?

Houston leads with 66 headquartered companies, followed by Houma (8) and Katy (4).

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 4,809 verified decision-maker contacts tracked across these 221 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 18, 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.