Company lists · Data refreshed September 2026

Top 25 Port and harbor contractors based in the United States

Name: Port and harbor contractors 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 366 companies tracked

RevenueBase identified 366 company matches for port and harbor contractors associated with the United States as of September 2026 and tracks 10,419 professional contacts across them, including 3,004 with verified work emails. Seattle is the largest hub.

This list covers company matches for port and harbor contractors 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

366Companies

10,419Contacts tracked

3,004Verified emails

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The 25 largest port and harbor contractors based in the United States

Ranked by team size

Top 25 of 366 company matches for port and harbor contractors 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	Ports America	Exact match	Morristown, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,076 contacts →
	Exact match “Ports America is the leading U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Weeks Marine, INC	Exact match	Cranford, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	847 contacts →
	Exact match “Founded in 1919, Weeks Marine, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Manson Construction CO	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	501-1,000	592 contacts →
	Exact match “Manson is one of the nation’s leading heavy civil marine construction and dredging companies.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	South Carolina Ports	Exact match	Mt. Pleasant, SC, United StatesHQ recorded Sep 17, 2026	501-1,000	284 contacts →
	Exact match “South Carolina Ports owns and operates public seaport and intermodal facilities in Charleston, Greer and Dillon, handling more than $75 billion in commerce annually.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Tico Terminal Investment Corporation	Exact match	Savannah, SC, United StatesHQ recorded Sep 17, 2026	201-500	270 contacts →
	Exact match “TICO is mission driven to be the most respected provider of equipment and services in the port, terminal, distribution, logistics, and intermodal space.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	J.F. Brennan Company	Exact match	La Crosse, WI, United StatesHQ recorded Sep 17, 2026	501-1,000	241 contacts →
	Exact match “At Brennan, our people are our top priority.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Ballard Marine Construction	Exact match	Washougal, WA, United StatesHQ recorded Sep 17, 2026	51-200	236 contacts →
	Exact match “Ballard Marine Construction (Ballard) is a specialty marine and underwater contractor.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Sully-Miller Contracting CO	Exact match	Brea, CA, United StatesHQ recorded Sep 17, 2026	201-500	199 contacts →
	Exact match “Part of Colas USA, Sully-Miller Contracting Company is one of the premier road and highway contractors, rail & intermodal, seaport, airport, federal/military and specialty…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	G & H Towing Company	Exact match	Galveston, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	187 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Port Canaveral	Exact match	Cape Canaveral, FL, United StatesHQ recorded Sep 17, 2026	201-500	164 contacts →
	Exact match “Florida’s premier seaport, Port Canaveral delivers an unmatched experience for cruise travel and cargo operations with a customer-forward approach and convenient, centralized…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Bellingham Marine	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 17, 2026	201-500	163 contacts →
	Exact match “Bellingham Marine is an established leader in the marine construction world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	The Dutra Group	Exact match	San Rafael, CA, United StatesHQ recorded Sep 17, 2026	201-500	158 contacts →
	Exact match “The Dutra Group is a leading heavy civil marine contractor focused on strengthening our nation’s infrastructure through sustainable dredging and marine construction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Port Of NEW Orleans	Exact match	New Orleans, LA, United StatesHQ recorded Sep 17, 2026	201-500	143 contacts →
	Exact match “Port NOLA’s unique geographical location, inland connections and diverse capabilities set us apart.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	JAY Cashman, INC	Exact match	Quincy, MA, United StatesHQ recorded Sep 17, 2026	201-500	138 contacts →
	Exact match “Cashman is a privately held multi-disciplinary construction and development company, founded and owned by Jay M.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Russell Marine LLC	Exact match	Channelview, TX, United StatesHQ recorded Sep 17, 2026	201-500	126 contacts →
	Exact match “Russell Marine LLC is a heavy civil marine construction company located in Channelview, Texas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	SUS	Exact match	Baltimore, MD, United StatesHQ recorded Sep 17, 2026	11-50	118 contacts →
	Exact match “SUS specializes in underwater marine construction including bridges, dams, pipelines, intakes, outfalls, inspection services, piers and wharfs and other public safety and local…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Pacific Pile & Marine	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	51-200	109 contacts →
	Exact match “Pacific Pile & Marine (PPM) is a heavy civil and marine general contractor.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Northern Construction Service, LLC	Exact match	Sudbury, MA, United StatesHQ recorded Sep 17, 2026	501-1,000	85 contacts →
	Exact match “Northern Construction Service, LLC is a New England-based general contractor specializing in bridge construction, civil site development, marine infrastructure (ports and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Port Of Everett	Exact match	Everett, WA, United StatesHQ recorded Sep 17, 2026	51-200	83 contacts →
	Exact match “The Port of Everett is a natural deep-water port located 25 miles north of Seattle on the Puget Sound.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	C.J. Mahan Construction Company, LLC	Exact match	Grove City, OH, United StatesHQ recorded Sep 17, 2026	51-200	76 contacts →
	Exact match “Based in Grove City, Ohio, C.J.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	St. Johns Ship Building, INC	Exact match	Palatka, FL, United StatesHQ recorded Sep 17, 2026	51-200	72 contacts →
	Exact match “St.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	BIG DOG Drilling	Exact match	Rockwall, TX, United StatesHQ recorded Sep 17, 2026	51-200	61 contacts →
	Exact match “Big Dog Drilling is commercial pier drilling and concrete contractor located in Rockwall, TX” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	W.F. Magann Corporation	Exact match	Portsmouth, VA, United StatesHQ recorded Sep 17, 2026	51-200	60 contacts →
	Exact match “Built for tide & time since 1946.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Senesco Marine LLC	Exact match	North Kingstown, RI, United StatesHQ recorded Sep 17, 2026	201-500	58 contacts →
	Exact match “A pristine 26 acre ISO 9001 certified shipyard located on Narragansett Bay in Quonset Point, Rhode Island, U.S.A.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	S. T. Hudson Engineers, INC	Exact match	Cherry Hill, NJ, United StatesHQ recorded Sep 17, 2026	51-200	57 contacts →
	Exact match “S.” 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 “port and harbor contractors”. 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 366 port and harbor contractors based in the United States

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Port and harbor contractors based in the United States at a glance

As of Sep 17, 2026

28.8%Verified-email coverage

28.5Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · Seattle

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

135

11-50

130

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 366 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 “port and harbor contractors” 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 3,004 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.

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 “port and harbor contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many port and harbor contractors are there based in the United States?

RevenueBase identified 366 company matches for port and harbor contractors 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?

Ports America tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most port and harbor contractors?

Seattle leads with 9 company records, followed by Charleston (7) and Houston (7).

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 3,004 professional contacts with verified work emails tracked across these 366 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.