Company lists · Data refreshed September 2026

Top 25 Offshore structural engineering firms based in Houston, United States

Name: Offshore structural engineering firms based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 200 companies tracked

RevenueBase identified 200 offshore structural engineering firms headquartered in Houston, United States as of September 2026 and tracks 30,976 professional contacts across them, including 8,622 with verified work emails. Houston is the largest hub.

This list covers offshore structural engineering firms headquartered in Houston, 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

200Companies

30,976Contacts tracked

8,622Verified emails

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The 25 largest offshore structural engineering firms based in Houston, United States

Ranked by team size

Top 25 of 200 offshore structural engineering firms based in Houston, 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 structural engineering firms: 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	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
3	Walter P Moore	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Welcome to Walter P Moore!” Source: RevenueBase Database · checked Sep 17, 2026
4	KBR Energo Engineering	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	789 contacts →
	Strong 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
5	ARION	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	310 contacts →
	Indirect evidence “We are A-Team of engineers specializing in the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
6	CTS Complete Technical Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	250 contacts →
	Indirect evidence “CTS - Complete Technical Services, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
7	Delmar Systems	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	207 contacts →
	Partial 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 17, 2026
8	Gulf Island	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	193 contacts →
	Partial evidence “Gulf Island is a leading fabricator of complex steel structures and modules and provider of specialty services, including project management, hookup, commissioning, repair…” Source: RevenueBase Database · checked Sep 17, 2026
9	Zentech Incorporated	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	181 contacts →
	Partial evidence “Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Source: RevenueBase Database · checked Sep 17, 2026
10	Deepsea Technologies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	166 contacts →
	Indirect 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 17, 2026
11	PPI Quality & Engineering, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	147 contacts →
	Partial evidence “PPI Quality & Engineering, a member of the Kiwa group of companies, saves its clients millions by providing economic solutions for complicated projects for the renewable energy…” Source: RevenueBase Database · checked Sep 17, 2026
12	Petrolog Group	Indirect evidence	Houston, United StatesHQ checked Sep 17, 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 17, 2026
13	Perc Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	124 contacts →
	Partial evidence “PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
14	Bisso Marine	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	118 contacts →
	Partial 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 17, 2026
15	Benthic - Utec	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	115 contacts →
	Partial evidence “Benthic is a global leader in offshore marine geotechnical investigation, survey, analysis and design.” Source: RevenueBase Database · checked Sep 17, 2026
16	Moduspec	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	101 contacts →
	Indirect evidence “ModuSpec first introduced the concept of rig inspection to the market in 1986 and since then, has been providing unrivalled expertise and assurance to support safe operations…” Source: RevenueBase Database · checked Sep 17, 2026
17	Dsds Deep SEA Development Services, INC - Dsds	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	101 contacts →
	Indirect 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 17, 2026
18	Deepocean US	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	81 contacts →
	Indirect evidence “DeepOcean is the leading, subsea services provider, servicing any equipment with specialized expertise.” Source: RevenueBase Database · checked Sep 17, 2026
19	Marine And Construction	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	72 contacts →
	Partial evidence “Marine and Construction focuses on customer needs across the entire life cycle of assets within the offshore and marine industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	Zadok Technologies, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	64 contacts →
	Partial evidence “Zadok Technologies – Providing Engineering And Field Services To The World Quality Companies provides engineering and field services to the world.” Source: RevenueBase Database · checked Sep 17, 2026
21	Pinnacle Engineering	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	62 contacts →
	Strong evidence “Since 1993, Pinnacle has remained focused on providing practical and complete engineering services to the offshore oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
22	Dally Associates	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	57 contacts →
	Indirect evidence “Founded in 1993, Dally + Associates, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
23	Koil Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
24	Decon LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	55 contacts →
	Partial evidence “MBE \| SBE \| DBE \| HUB \| HHF, TBPE Firm No 16156 DECON LLC,founded by Fulvio Jaramillo, a consulting engineering firm committed to technical excellence, DECON’s services help…” Source: RevenueBase Database · checked Sep 17, 2026
25	Integrity Structural Corp	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	42 contacts →
	Strong evidence “Integrity Structural is a Houston based, structural engineering firm founded in 2002.” 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 structural engineering firms. 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 structural engineering firms.
Partial evidence: Its own public description names part of offshore structural engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore structural engineering firms. 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 200 offshore structural engineering firms based in Houston, United States

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Offshore structural engineering firms based in Houston, United States at a glance

As of Sep 17, 2026

27.8%Verified-email coverage

154.9Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 17, 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 across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 200 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 structural engineering firms, 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 Houston, United States whose own description of what they do matches “offshore structural engineering firms”. 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 structural engineering firms), 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 structural engineering firms, and records with no verified work email. Companies headquartered outside Houston 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, 8,622 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 structural engineering firms by metro in the United States

Offshore structural engineering firms in Houston200
Offshore structural engineering firms in New York36
Offshore structural engineering firms in Austin28
Offshore structural engineering firms in Los Angeles25

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 structural engineering firms, 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 structural engineering firms are there based in Houston, United States?

RevenueBase identified 200 offshore structural engineering firms headquartered in Houston, 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 structural engineering firms?

Houston leads with 200 headquartered companies, followed by New York (36) and Austin (28).

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 8,622 verified decision-maker contacts tracked across these 200 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.