Company lists · Data refreshed September 2026
Top 25 Port and harbor consulting firms based in the United States
RevenueBase identified 308 port and harbor consulting firms headquartered in the United States as of September 2026 and tracks 6,131 professional contacts across them, including 3,004 with verified work emails. Houston is the largest hub.
This list covers port and harbor 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 29, 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.
The 25 largest port and harbor consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,178 contacts → | ||||
Partial evidence “Moffatt & Nichol is a leading U.S-based global infrastructure advisor specializing in the planning and design of facilities that shape and serve our coastlines, harbors and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 491 contacts → | ||||
Indirect evidence “Our story began in 1946 with the collaboration of former US Army Corps of Engineers Officers, Hue Thomas and Joe Hutton, in their start-up engineering firm in Savannah, GA.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 432 contacts → | ||||
Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 241 contacts → | ||||
Indirect evidence “At Brennan, our people are our top priority.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 187 contacts → | ||||
Partial evidence “G&H Towing Company is one of the oldest and most progressive towing companies on the Texas Gulf Coast, and we operate an outstanding fleet of over harbor tugs with…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 139 contacts → | ||||
Partial evidence “PND Engineers, Inc.(PND) is a consulting engineering firm founded in 1979 in Anchorage, Alaska.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 85 contacts → | ||||
Indirect evidence “Century West Engineering Corporation (Century West) was founded in Bend, Oregon in 1969 and has been providing responsive, quality engineering services to Pacific Northwest…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 74 contacts → | ||||
Strong evidence “Gahagan & Bryant Associates, Inc.(GBA) is a unique engineering firm that specializes in providing consulting and engineering services for a variety of projects, including port…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 64 contacts → | ||||
Indirect evidence “In business for over 22 years, ICON Engineering is one of Denver’s most reputable planning, design, and project management civil engineering firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 64 contacts → | ||||
Indirect evidence “Capital Ship Solutions provides expert Technical, Engineering and Management Consultancy for diverse stakeholders in the Shipping and Offshore sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 60 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Indirect evidence “S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 55 contacts → | ||||
Indirect evidence “KS Associates is an engineering and surveying firm that provides coastal and marine engineering, site planning and design, and land surveying services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 52 contacts → | ||||
Strong evidence “AMI is driving innovation in Ports & Harbors, Coastal & Riverine, Waterfronts & Marinas, Dams & Levees, Buildings, and Industrial Facilities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 52 contacts → | ||||
Indirect evidence “Founded in 2010, Hepburn and Sons LLC, in the Commonwealth of Virginia as an S-Corp Small Business, our focus is in naval engineering and architecture.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 48 contacts → | ||||
Indirect evidence “Rossi Group is certified as a Women-owned Minority Business Enterprise (W/MBE), a Disadvantaged Business Enterprise (DBE), and a Small Business Reserve (SBR) company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 48 contacts → | ||||
Indirect evidence “We engineer solutions for the global customer in cargo handling, shore-based services, fabrication and much more.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 47 contacts → | ||||
Partial evidence “Appledore Marine Engineering (AME) is an industry leader in engineering consulting, specializing in waterfront infrastructure in ocean and inland waterway environments.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 46 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 44 contacts → | ||||
Indirect evidence “Stemming from water resources, our passion to enhance and preserve our environment has deepened through exciting and diverse projects.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 44 contacts → | ||||
Indirect evidence “Harris Civil Engineers, LLC is located in Orlando, Florida.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: port and harbor 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 port and harbor consulting firms.
- Partial evidence
- Its own public description names part of port and harbor consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name port and harbor 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 308 port and harbor consulting firms based in the United States
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Port and harbor consulting firms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 308 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 port and harbor 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 “port and harbor 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 port and harbor 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 port and harbor 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, 3,004 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 29, 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.
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 port and harbor 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 port and harbor consulting firms are there based in the United States?
RevenueBase identified 308 port and harbor 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?
Moffatt & Nichol, headquartered in Long Beach, tops this list with the largest team on record.
Which city has the most port and harbor consulting firms?
Houston leads with 9 headquartered companies, followed by Fort Lauderdale (8) and Miami (8).
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 3,004 verified decision-maker contacts tracked across these 308 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 29, 2026.
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Port and harbor consulting firms by geography
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- Port and harbor consulting firms based in Germany
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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.
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- Port and harbor consulting firms based in Rio De Janeiro, Brazil
- Port and harbor consulting firms based in Australia
- Port and harbor consulting firms based in Brazil
- Port and harbor consulting firms based in Canada
- Port and harbor consulting firms based in Chile
- Port and harbor consulting firms based in France