Company lists · Data refreshed September 2026

Top 25 Maritime engineering firms based in the United States

Name: Maritime 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 895 companies tracked

RevenueBase identified 895 maritime engineering firms headquartered in the United States as of September 2026 and tracks 19,387 professional contacts across them, including 5,225 with verified work emails. Houston is the largest hub.

This list covers maritime 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

895Companies

19,387Contacts tracked

5,225Verified emails

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The 25 largest maritime engineering firms based in the United States

Ranked by team size

Top 25 of 895 maritime 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 maritime 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	Bollinger Shipyards	Indirect evidence	Lockport, United StatesHQ checked Sep 17, 2026	5,001-10,000	853 contacts →
	Indirect 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
2	KBR Energo Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	789 contacts →
	Partial 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
3	Manson Construction CO	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	501-1,000	592 contacts →
	Indirect evidence “Manson is one of the nation’s leading heavy civil marine construction and dredging companies.” Source: RevenueBase Database · checked Sep 17, 2026
4	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
5	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
6	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
7	Leidos Gibbs & COX	Partial evidence	Arlington, VA, United StatesHQ checked Sep 17, 2026	201-500	394 contacts →
	Partial 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
8	WR Systems	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 17, 2026	201-500	372 contacts →
	Strong evidence “Engineering and Technical Services As a leader in navigation and geospatial engineering, WR is on the forefront of maritime innovation, designing and integrating PNT systems…” Source: RevenueBase Database · checked Sep 17, 2026
9	Imia, LLC	Indirect evidence	Chesapeake, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	293 contacts →
	Indirect 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
10	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
11	American Bridge Company	Indirect evidence	Coraopolis, PA, United StatesHQ checked Sep 17, 2026	501-1,000	281 contacts →
	Indirect evidence “American Bridge is a legendary construction company whose projects include a significant proportion of the world’s large bridges, marine installations, and other complex…” Source: RevenueBase Database · checked Sep 17, 2026
12	J.F. Brennan Company	Indirect evidence	La Crosse, WI, United StatesHQ checked Sep 17, 2026	501-1,000	241 contacts →
	Indirect evidence “At Brennan, our people are our top priority.” Source: RevenueBase Database · checked Sep 17, 2026
13	Conrad Shipyard	Indirect evidence	Morgan City, LA, United StatesHQ checked Sep 17, 2026	201-500	218 contacts →
	Indirect 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
14	Global Diving & Salvage, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	201-500	217 contacts →
	Indirect evidence “Global is a leader in the marine services industry with decades of experience managing complex, critical and technical projects in and around the water.” Source: RevenueBase Database · checked Sep 17, 2026
15	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
16	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
17	Trimble Civil Construction	Partial evidence	Westminster, CO, United StatesHQ checked Sep 17, 2026	10001+	171 contacts →
	Partial evidence “Trimble Civil Construction provides advanced solutions for construction, engineering and marine projects worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
18	Gulf Copper	Indirect evidence	Port Arthur, TX, United StatesHQ checked Sep 17, 2026	501-1,000	171 contacts →
	Indirect 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
19	Bellingham Marine	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 17, 2026	201-500	163 contacts →
	Indirect evidence “Bellingham Marine is an established leader in the marine construction world.” Source: RevenueBase Database · checked Sep 17, 2026
20	Marine Solutions, INC	Indirect evidence	Nicholasville, KY, United StatesHQ checked Sep 17, 2026	51-200	145 contacts →
	Indirect evidence “Marine Solutions is a premier marine and bridge infrastructure firm which delivers complex solutions to demanding projects.” Source: RevenueBase Database · checked Sep 17, 2026
21	PND Engineers, INC	Partial evidence	Anchorage, AK, United StatesHQ checked Sep 17, 2026	51-200	139 contacts →
	Partial evidence “PND Engineers, Inc.(PND) is a consulting engineering firm founded in 1979 in Anchorage, Alaska.” Source: RevenueBase Database · checked Sep 17, 2026
22	JAY Cashman, INC	Indirect evidence	Quincy, MA, United StatesHQ checked Sep 17, 2026	201-500	138 contacts →
	Indirect evidence “Cashman is a privately held multi-disciplinary construction and development company, founded and owned by Jay M.” Source: RevenueBase Database · checked Sep 17, 2026
23	Thayermahan, INC	Partial evidence	Groton, United StatesHQ checked Sep 17, 2026	201-500	135 contacts →
	Partial evidence “ThayerMahan is leading a transformation in how maritime solutions are delivered, sustained, and scaled.” Source: RevenueBase Database · checked Sep 17, 2026
24	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
25	ABS Wavesight	Partial evidence	Spring, TX, United StatesHQ checked Sep 17, 2026	201-500	125 contacts →
	Partial evidence “ABS Wavesight™ is a maritime software-as-a-service (SaaS) company, built on the foundation of ABS, one of the world's leading ship classification organizations with a 160+ year…” 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: maritime 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 maritime engineering firms.
Partial evidence: Its own public description names part of maritime engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name maritime 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 895 maritime engineering firms based in the United States

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Maritime engineering firms based in the United States at a glance

As of Sep 17, 2026

27.0%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

432

11-50

289

51-200

105

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 895 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 maritime 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 “maritime 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 maritime 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 maritime 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, 5,225 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 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.

Maritime engineering firms by metro

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

RevenueBase identified 895 maritime 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?

Bollinger Shipyards, headquartered in United States, tops this list with the largest team on record.

Which city has the most maritime engineering firms?

Houston leads with 55 headquartered companies, followed by Miami (26) and Seattle (25).

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 5,225 verified decision-maker contacts tracked across these 895 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.