Company lists · Data refreshed September 2026

Top 25 Offshore structural engineering firms based in the United States

Name: Offshore structural engineering firms 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 2,041 companies tracked

RevenueBase identified 2,041 company matches for offshore structural engineering firms associated with the United States as of September 2026 and tracks 61,989 professional contacts across them, including 20,928 with verified work emails. Houston is the largest hub.

This list covers company matches for offshore structural engineering firms 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

2,041Companies

61,989Contacts tracked

20,928Verified emails

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The 25 largest offshore structural engineering firms based in the United States

Ranked by team size

Top 25 of 2,041 company matches for offshore structural engineering firms 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	Audubon Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,488 contacts →
	Exact match “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,298 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	DGS Technical Services INC	Exact match	Elgin, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,050 contacts →
	Exact match “DGSTS, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	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
6	Schnabel Engineering	Exact match	Glen Allen, VA, United StatesHQ recorded Sep 17, 2026	501-1,000	707 contacts →
	Exact match “Schnabel is a trusted partner in building the foundation for project success.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	EDG	Exact match	Metairie, LA, United StatesHQ recorded Sep 17, 2026	501-1,000	700 contacts →
	Exact match “EDG Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	GIS	Exact match	Galliano, LA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	612 contacts →
	Exact match “Established in 1948 in Grand Isle, LA, GIS began as a modest company serving the commercial fishing industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	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
10	Desimone Consulting Engineering	Exact match	New York, NY, United StatesHQ recorded Sep 17, 2026	501-1,000	512 contacts →
	Exact match “Founded in New York City in 1969, DeSimone provides structural engineering, façade and building envelope consulting, vertical transportation consulting, forensics, structural…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Anvil Corporation	Exact match	Bellingham, WA, United StatesHQ recorded Sep 17, 2026	201-500	460 contacts →
	Exact match “Founded in 1971, Anvil Corporation is a 100% employee-owned engineering firm providing multi-discipline engineering, design, project management, procurement, and construction…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Collins Engineers, INC	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	201-500	432 contacts →
	Exact match “In 1979, Collins Engineers, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Recon Management Services, INC	Exact match	Sulphur, LA, United StatesHQ recorded Sep 17, 2026	501-1,000	420 contacts →
	Exact match “ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	DCI Engineers	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	201-500	404 contacts →
	Exact match “DCI Engineers has been providing client-focused structural and civil engineering services for over three decades.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Leidos Gibbs & COX	Exact match	Arlington, VA, United StatesHQ recorded Sep 17, 2026	201-500	394 contacts →
	Exact match “Leidos Gibbs & Cox is an engineering and design firm specializing naval architecture, marine engineering, and consulting engineering.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Degenkolb Engineers	Exact match	San Francisco, CA, United StatesHQ recorded Sep 17, 2026	201-500	332 contacts →
	Exact match “Founded in 1940, Degenkolb Engineers’ practice reflects more than eight decades of commitment to expertise, client service, and life-long learning.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	ARION	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	310 contacts →
	Exact match “We are A-Team of engineers specializing in the energy industry.” 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	American Bridge Company	Exact match	Coraopolis, PA, United StatesHQ recorded Sep 17, 2026	501-1,000	281 contacts →
	Exact match “American Bridge is a legendary construction company whose projects include a significant proportion of the world’s large bridges, marine installations, and other complex…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	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
21	Jva, INC	Exact match	Boulder, CO, United StatesHQ recorded Sep 17, 2026	51-200	258 contacts →
	Exact match “JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	CTS Complete Technical Services	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	250 contacts →
	Exact match “CTS - Complete Technical Services, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Modjeski And Masters	Exact match	Mechanicsburg, PA, United StatesHQ recorded Sep 17, 2026	201-500	241 contacts →
	Exact match “Modjeski and Masters is a nationwide leader in the design, inspection, and rehabilitation of all bridges types, including long-span and movable structures.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Larson Engineering	Exact match	White Bear Lake, MN, United StatesHQ recorded Sep 17, 2026	51-200	234 contacts →
	Exact match “Core Purpose: We use our passion for engineering to impact the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Delmar Systems	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	207 contacts →
	Exact match “Delmar Systems is the trusted partners to most offshore energy industry’s leaders, delivering innovative and customer-focused anchoring and mooring solutions.” 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 structural engineering firms”. 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 2,041 offshore structural engineering firms based in the United States

See the full list, filter by size, metro and specialty, and access 20,928 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore structural engineering firms based in the United States at a glance

As of Sep 17, 2026

33.8%Verified-email coverage

30.4Average contacts per company

1-10Median size (employees)

9.8%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,098

11-50

676

51-200

193

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 2,041 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 structural engineering firms” 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 20,928 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.

Offshore structural engineering firms by metro

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 structural engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore structural engineering firms are there based in the United States?

RevenueBase identified 2,041 company matches for offshore structural engineering firms 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 structural engineering firms?

Houston leads with 200 company records, followed by New York (39) and Austin (28).

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 20,928 professional contacts with verified work emails tracked across these 2,041 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.