Company lists · Data refreshed September 2026

Top 25 Maritime consulting firms based in the United States

Name: Maritime consulting 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 5, 2026 1,010 companies tracked

RevenueBase identified 1,010 maritime consulting firms headquartered in the United States as of September 2026 and tracks 11,626 professional contacts across them, including 3,632 with verified work emails and 4,377 with mobile numbers. Houston is the largest hub.

This list covers maritime consulting 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 5, 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 5, 2026 86% judged on-target in blind review

1,010Companies

11,626Contacts tracked

3,632Verified emails

4,377Mobile numbers

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The 25 largest maritime consulting firms based in the United States

Ranked by team size

Top 25 of 1,010 maritime consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to maritime consulting 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	Foss Maritime Company	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	501-1,000	531 contacts →
	Partial evidence “Foss Maritime provides comprehensive marine transportation and logistics services.” Source: RevenueBase Database · checked Sep 5, 2026
2	Leidos Gibbs & COX	Partial evidence	Arlington, VA, United StatesHQ checked Sep 5, 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 5, 2026
3	The Vane Brothers Company	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 5, 2026	501-1,000	363 contacts →
	Partial evidence “The Vane Brothers Company has served the maritime industry for more than 125 years, providing a wide range of services that includes ship bunkering and lightering; the delivery of…” Source: RevenueBase Database · checked Sep 5, 2026
4	Global Diving & Salvage, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 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 5, 2026
5	Curtin Maritime, Corp	Partial evidence	Long Beach, CA, United StatesHQ checked Sep 5, 2026	201-500	178 contacts →
	Partial evidence “Curtin Maritime is an American-owned and operated marine solutions company, committed to innovation, efficiency, and integrity across every element of maritime operations.” Source: RevenueBase Database · checked Sep 5, 2026
6	HMM America	Indirect evidence	Irving, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	171 contacts →
	Indirect evidence “Hyundai Merchant Marine (HMM) is a leading global shipping company operating over 130 state-of-the-art vessels encompassing more than 50 sea routes to over 100 ports of call.” Source: RevenueBase Database · checked Sep 5, 2026
7	Bellingham Marine	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 5, 2026	201-500	163 contacts →
	Indirect evidence “Bellingham Marine is an established leader in the marine construction world.” Source: RevenueBase Database · checked Sep 5, 2026
8	Signet Maritime Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	153 contacts →
	Partial evidence “Signet Maritime Corporation is a diverse international marine transportation and logistics services company.” Source: RevenueBase Database · checked Sep 5, 2026
9	Patriot Maritime	Partial evidence	Concord, CA, United StatesHQ checked Sep 5, 2026	11-50	138 contacts →
	Partial evidence “Patriot Maritime is a leading maritime contractor to the U.S.” Source: RevenueBase Database · checked Sep 5, 2026
10	ABS Wavesight	Partial evidence	Spring, TX, United StatesHQ checked Sep 5, 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 5, 2026
11	Reinauer Transportation Companies, LLC	Partial evidence	Staten Island, United StatesHQ checked Sep 5, 2026	501-1,000	124 contacts →
	Partial evidence “Reinauer Transportation Companies is a leader in the maritime industry.” Source: RevenueBase Database · checked Sep 5, 2026
12	Lanier & Associates Consulting Engineers, INC	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 5, 2026	51-200	122 contacts →
	Indirect 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 5, 2026
13	Stabbert Maritime	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	201-500	119 contacts →
	Partial evidence “Stabbert Maritime’s group of companies delivers a wide-range of innovative solutions and support services to our offshore, science, subsea energy, and ship repair clients across…” Source: RevenueBase Database · checked Sep 5, 2026
14	Marine Systems Corporation Mscorp	Indirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	116 contacts →
	Indirect 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 5, 2026
15	Glosten	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	104 contacts →
	Indirect 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 5, 2026
16	Terminal Security Solutions, INC	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 5, 2026	501-1,000	103 contacts →
	Indirect evidence “TSS is a private security firm specializing in customer service, partnership focused cruise terminal, cargo facility and port authority security services, as well as crew…” Source: RevenueBase Database · checked Sep 5, 2026
17	Ocean Associates, INC	Partial evidence	Arlington, VA, United StatesHQ checked Sep 5, 2026	51-200	100 contacts →
	Partial evidence “OAI provides professional consulting services to government organizations, the private sector, academia, and UN agencies.” Source: RevenueBase Database · checked Sep 5, 2026
18	Mcquilling Partners, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	96 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
19	Thomas Quinn, LLP	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	89 contacts →
	Indirect evidence “Thomas Quinn, LLP is founded on the principles of honesty and accountability.” Source: RevenueBase Database · checked Sep 5, 2026
20	East Coast Repair & Fabrication, LLC	Indirect evidence	Newport News, VA, United StatesHQ checked Sep 5, 2026	51-200	88 contacts →
	Indirect evidence “East Coast Repair and Fabrication (ECR) has been a leading force in the marine, industrial and commercial sectors since We have an established and proven track record with the…” Source: RevenueBase Database · checked Sep 5, 2026
21	Moran Shipping Agencies	Indirect evidence	Providence, RI, United StatesHQ checked Sep 5, 2026	51-200	87 contacts →
	Indirect evidence “Moran Shipping Agencies, Inc is a family owned business that began operations in 1937 and has since grown to become the largest privately owned vessel agency in the United States.” Source: RevenueBase Database · checked Sep 5, 2026
22	Seaport Agencies	Indirect evidence	Miami, FL, United StatesHQ checked Sep 5, 2026	51-200	87 contacts →
	Indirect evidence “Welcome to Seaport Agencies, a privately owned shipping agency company established in 1998.” Source: RevenueBase Database · checked Sep 5, 2026
23	AMI International	Indirect evidence	Bremerton, WA, United StatesHQ checked Sep 5, 2026	11-50	83 contacts →
	Indirect evidence “Proven Edge in the Global Naval Market A.” Source: RevenueBase Database · checked Sep 5, 2026
24	Cummins Cederberg	Indirect evidence	Coral Gables, FL, United StatesHQ checked Sep 5, 2026	51-200	82 contacts →
	Indirect evidence “Cummins Cederberg is a leader in coastal and marine engineering, delivering solutions for some of the most complex and high-impact waterfront projects.” Source: RevenueBase Database · checked Sep 5, 2026
25	Elliott BAY Design Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	80 contacts →
	Indirect evidence “Elliott Bay Design Group (EBDG) is a full-service, employee-owned naval architecture and marine engineering firm that supports owners, operators and shipyards.” Source: RevenueBase Database · checked Sep 5, 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 consulting 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 consulting firms.
Partial evidence: Its own public description names part of maritime consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name maritime consulting 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 1,010 maritime consulting firms based in the United States

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Maritime consulting firms based in the United States at a glance

As of Sep 5, 2026

31.2%Verified-email coverage

37.6%Mobile-number coverage

11.5Average contacts per company

1-10Median size (employees)

6.1%Largest-city concentration · Houston

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

605

11-50

281

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

3,3740–30

22331–60

061–90

090–180

35180+

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 consulting 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 consulting 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 consulting 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 consulting 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, 3,632 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 5, 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 consulting 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 consulting 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 consulting firms are there based in the United States?

RevenueBase identified 1,010 maritime consulting 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?

Foss Maritime Company, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most maritime consulting firms?

Houston leads with 62 headquartered companies, followed by Miami (48) and Fort Lauderdale (45).

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 3,632 verified decision-maker contacts tracked across these 1,010 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 5, 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.