Company lists · Data refreshed September 2026

Top 25 Marine engineering firms based in the United States

Name: Marine 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 724 companies tracked

RevenueBase identified 724 marine engineering firms headquartered in the United States as of September 2026 and tracks 17,186 professional contacts across them, including 3,597 with verified work emails. Houston is the largest hub.

This list covers marine engineering firms 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 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

724Companies

17,186Contacts tracked

3,597Verified emails

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The 25 largest marine engineering firms based in the United States

Ranked by team size

Top 25 of 724 marine engineering firms based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine 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	Edison Chouest Offshore	Partial evidence	Cut Off, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,853 contacts →
	Partial evidence “Recognized Worldwide for Diverse and Dynamic Marine Transportation Solutions Founded as Edison Chouest Boat Rental in Galliano, Louisiana, in 1960, the Edison Chouest Offshore…” Source: RevenueBase Database · checked Sep 17, 2026
2	Bollinger Shipyards	Partial evidence	Lockport, United StatesHQ checked Sep 17, 2026	5,001-10,000	853 contacts →
	Partial evidence “Bollinger Shipyards is the leading provider of quality new construction, repair and conversion products and services to both the military and commercial marine industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	Trident Maritime Systems	Partial evidence	Arlington, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	527 contacts →
	Partial evidence “Knowledge, Value and Agility Over maritime professionals - engineers, project managers, designers, technicians, craftsmen, integrators and innovators in 19 countries are proud to…” Source: RevenueBase Database · checked Sep 17, 2026
4	Hanwha Philly Shipyard	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	486 contacts →
	Indirect evidence “Trusted U.S.” Source: RevenueBase Database · checked Sep 17, 2026
5	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	201-500	432 contacts →
	Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
6	Leidos Gibbs & COX	Strong evidence	Arlington, VA, United StatesHQ checked Sep 17, 2026	201-500	394 contacts →
	Strong evidence “Leidos Gibbs & Cox is an engineering and design firm specializing naval architecture, marine engineering, and consulting engineering.” Source: RevenueBase Database · checked Sep 17, 2026
7	Imia, LLC	Partial evidence	Chesapeake, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	293 contacts →
	Partial evidence “Founded in 1985 and a distinguished part of ARMADA Parent Inc, established itself as a premier marine preservation company, delivering an extensive suite of services to…” Source: RevenueBase Database · checked Sep 17, 2026
8	Q.E.D. Systems, INC	Indirect evidence	Virginia Beach, VA, United StatesHQ checked Sep 17, 2026	501-1,000	284 contacts →
	Indirect evidence “Quod Erat Demonstrandum (QED) – “That which has been demonstrated or proven” – QED Systems Inc.” Source: RevenueBase Database · checked Sep 17, 2026
9	Offshore Inland Marine & Oilfield Services, INC	Partial evidence	Pensacola, FL, United StatesHQ checked Sep 17, 2026	51-200	266 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 17, 2026
10	Conrad Shipyard	Partial evidence	Morgan City, LA, United StatesHQ checked Sep 17, 2026	201-500	218 contacts →
	Partial evidence “Conrad Shipyard specializes in the construction, conversion and repair of a wide variety of steel and aluminum marine vessels for commercial and governmental customers.” Source: RevenueBase Database · checked Sep 17, 2026
11	Rhoads Industries	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	501-1,000	196 contacts →
	Partial evidence “Founded and family‐owned since 1896, Rhoads Industries is a total solution provider of industrial fabrication, mechanical/maintenance and maritime services.” Source: RevenueBase Database · checked Sep 17, 2026
12	Subsea Global Solutions	Indirect evidence	Miami, FL, United StatesHQ checked Sep 17, 2026	201-500	176 contacts →
	Indirect evidence “Welcome to Subsea Global Solutions where EVERY DAY our goal is to deliver unrivaled service.” Source: RevenueBase Database · checked Sep 17, 2026
13	Gulf Copper	Partial evidence	Port Arthur, TX, United StatesHQ checked Sep 17, 2026	501-1,000	171 contacts →
	Partial evidence “Gulf Copper, a Davie Defense subsidiary, has been a leader in ship repair, fabrication, and marine services for more than 75 years, with facilities in Galveston and Port Arthur…” Source: RevenueBase Database · checked Sep 17, 2026
14	Bellingham Marine	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 17, 2026	201-500	163 contacts →
	Partial evidence “Bellingham Marine is an established leader in the marine construction world.” Source: RevenueBase Database · checked Sep 17, 2026
15	Pacific Ship Repair And Fabrication, INC	Indirect evidence	San Diego, United StatesHQ checked Sep 17, 2026	51-200	130 contacts →
	Indirect evidence “San Diego based ship repair facility” Source: RevenueBase Database · checked Sep 17, 2026
16	Lanier & Associates Consulting Engineers, INC	Strong evidence	New Orleans, LA, United StatesHQ checked Sep 17, 2026	51-200	122 contacts →
	Strong evidence “Lanier & Associates is a multi-disciplined engineering firm that specializes in industrial marine projects with civil, structural, mechanical, electrical and instrumentation…” Source: RevenueBase Database · checked Sep 17, 2026
17	Marine Systems Corporation Mscorp	Strong evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	51-200	116 contacts →
	Strong evidence “MSCorp is a privately held Small Business specializing in marine engineering, design, logistical, planning & maintenance support, and computer oriented support to the United…” Source: RevenueBase Database · checked Sep 17, 2026
18	Propulsion Controls Engineering PCE	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	201-500	113 contacts →
	Indirect evidence “PCE boasts a wealth of experience in successfully executing major system overhauls across numerous ports throughout the world on virtually every class of ship currently in…” Source: RevenueBase Database · checked Sep 17, 2026
19	BAY Ship & Yacht CO	Indirect evidence	Alameda, CA, United StatesHQ checked Sep 17, 2026	201-500	108 contacts →
	Indirect evidence “Bay Ship & Yacht Co.(BSY) was founded in 1977 by Bill Elliott with primary focus on the construction and repair of wooden ships.” Source: RevenueBase Database · checked Sep 17, 2026
20	Swiftships	Partial evidence	Morgan City, LA, United StatesHQ checked Sep 17, 2026	201-500	107 contacts →
	Partial evidence “Swiftships is an ISO 9001 certified, USA shipbuilder, and global defense contractor which offers end-to-end engineering, shipbuilding, testing, and delivery services for new…” Source: RevenueBase Database · checked Sep 17, 2026
21	Glosten	Strong evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	51-200	104 contacts →
	Strong evidence “Glosten is a full-service naval architecture and marine engineering consultancy with over 65 years of experience successfully taking on one-of-a-kind marine projects.” Source: RevenueBase Database · checked Sep 17, 2026
22	Pacific Shipyards International	Partial evidence	Honolulu, HI, United StatesHQ checked Sep 17, 2026	51-200	97 contacts →
	Partial evidence “Pacific Shipyards International is committed to excellence in repair, conversion, and maintenance in the industrial and maritime community.” Source: RevenueBase Database · checked Sep 17, 2026
23	Southwest Shipyard, LP	Partial evidence	Channelview, TX, United StatesHQ checked Sep 17, 2026	201-500	94 contacts →
	Partial evidence “We construct, repair and service a broad range of barges and boats for the commercial and government marine industry.” Source: RevenueBase Database · checked Sep 17, 2026
24	Aries Marine LLC	Indirect evidence	Garden Grove, United StatesHQ checked Sep 17, 2026	201-500	90 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	Lyon Shipyard, INC	Indirect evidence	Norfolk, VA, United StatesHQ checked Sep 17, 2026	201-500	89 contacts →
	Indirect evidence 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: marine 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 marine engineering firms.
Partial evidence: Its own public description names part of marine engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine 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 724 marine engineering firms based in the United States

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Marine engineering firms based in the United States at a glance

As of Sep 17, 2026

20.9%Verified-email coverage

23.7Average contacts per company

11-50Median size (employees)

7.2%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

322

11-50

241

51-200

101

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 724 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 marine 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 the United States whose own description of what they do matches “marine 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 marine 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 marine engineering firms, 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, 3,597 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.

Marine engineering firms by metro

Marine engineering firms in Houston52
Marine engineering firms in Fort Lauderdale26

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 marine 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 marine engineering firms are there based in the United States?

RevenueBase identified 724 marine engineering firms 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?

Edison Chouest Offshore, headquartered in Cut Off, tops this list with the largest team on record.

Which city has the most marine engineering firms?

Houston leads with 52 headquartered companies, followed by Fort Lauderdale (26) and Seattle (20).

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 3,597 verified decision-maker contacts tracked across these 724 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.