Company lists · Data refreshed September 2026

Top 25 Marine surveyor companies based in the United States

Name: Marine surveyor companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 326 companies tracked

RevenueBase identified 326 marine surveyor companies headquartered in the United States as of September 2026 and tracks 8,503 professional contacts across them, including 3,100 with verified work emails. Houston is the largest hub.

This list covers marine surveyor companies 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 20, 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 20, 2026 86% judged on-target in blind review

326Companies

8,503Contacts tracked

3,100Verified emails

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The 25 largest marine surveyor companies based in the United States

Ranked by team size

Top 25 of 326 marine surveyor companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marine surveyor companies: 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	American Bureau Of Shipping ABS	Indirect evidence	Spring, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	4,335 contacts →
	Indirect evidence “Since its founding in 1862, ABS has been committed to setting standards for safety and excellence as one of the world’s leading ship classification organizations.” Source: RevenueBase Database · checked Sep 20, 2026
2	ABS Group	Indirect evidence	Spring, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,113 contacts →
	Indirect evidence “ABS Group of Companies, provides data-driven risk and reliability solutions and technical services that help clients confirm the safety, integrity, quality and efficiency of…” Source: RevenueBase Database · checked Sep 20, 2026
3	Q.E.D. Systems, INC	Indirect evidence	Virginia Beach, VA, United StatesHQ checked Sep 20, 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 20, 2026
4	Resolve Marine	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 20, 2026	51-200	277 contacts →
	Partial evidence “Resolve Marine, a global leader in vessel salvage, emergency response, compliance and specialized marine services, has served and supported clients and projects for 40 years.” Source: RevenueBase Database · checked Sep 20, 2026
5	Phoenix International Holdings, INC	Indirect evidence	Largo, United StatesHQ checked Sep 20, 2026	201-500	170 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
6	CGI Coastal Gulf & International	Partial evidence	Saint Rose, LA, United StatesHQ checked Sep 20, 2026	201-500	130 contacts →
	Partial evidence “Since 1978, Coastal Gulf & International, Inc.(CGI) has been a trusted leader in independent inspection, testing, and technical services for the energy, petrochemical, and marine…” Source: RevenueBase Database · checked Sep 20, 2026
7	International Register Of Shipping	Indirect evidence	Miami, FL, United StatesHQ checked Sep 20, 2026	51-200	112 contacts →
	Indirect evidence “Established in 1993, the International Register of Shipping (INTLREG) is an independent classification society working with the objective of safeguarding life, property and the…” Source: RevenueBase Database · checked Sep 20, 2026
8	Tdi-Brooks	Partial evidence	College Station, TX, United StatesHQ checked Sep 20, 2026	51-200	107 contacts →
	Partial evidence “TDI-Brooks is a 27-year-old research and service company specializing in geotechnical and offshore survey projects; multi-disciplinary oceanographic and environmental projects…” Source: RevenueBase Database · checked Sep 20, 2026
9	Tailing LLC	Partial evidence	Belle Chasse, LA, United StatesHQ checked Sep 20, 2026	51-200	79 contacts →
	Partial evidence “Tailing, LLC has been serving the Land/Marine oil and gas sector with inspection services since 2007.” Source: RevenueBase Database · checked Sep 20, 2026
10	Baker Marine Solutions, LLC	Partial evidence	Covington, LA, United StatesHQ checked Sep 20, 2026	11-50	76 contacts →
	Partial evidence “Baker Marine Solutions is a leading provider of marine assurance, engineering and consulting services, performing DP assurance, OCIMF- OVID inspections, IMCA CMID inspections…” Source: RevenueBase Database · checked Sep 20, 2026
11	Seaward Marine Services, LLC	Partial evidence	Norfolk, VA, United StatesHQ checked Sep 20, 2026	51-200	71 contacts →
	Partial evidence “Seaward Marine Services was founded in 1972 to conduct underwater search and recovery operations, Seaward Marine has become the diving services leader in the field of underwater…” Source: RevenueBase Database · checked Sep 20, 2026
12	Capital Ship Solutions - CSS	Indirect evidence	Miami, FL, United StatesHQ checked Sep 20, 2026	51-200	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 20, 2026
13	Athens Group Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	11-50	56 contacts →
	Partial evidence “Athens Group Services is a comprehensive global provider of performance and safety assurance services to assist the offshore energy and marine industries design, construct, and…” Source: RevenueBase Database · checked Sep 20, 2026
14	American Marine Corporation	Partial evidence	Honolulu, HI, United StatesHQ checked Sep 20, 2026	51-200	55 contacts →
	Partial evidence “American Marine Corporation is a maritime company based out of Honolulu, HI, United States.” Source: RevenueBase Database · checked Sep 20, 2026
15	SEA Engineering, INC	Indirect evidence	Honolulu, United StatesHQ checked Sep 20, 2026	51-200	46 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
16	Ergonav Group	Partial evidence	New York, United StatesHQ checked Sep 20, 2026	501-1,000	45 contacts →
	Partial evidence “ERGONAV GROUP is an International privately-owned Corporation active in the Maritime Sector, focusing on Environmental Testing & Inspections.” Source: RevenueBase Database · checked Sep 20, 2026
17	Specialty Diving And Specialty Offshore	Partial evidence	Loranger, LA, United StatesHQ checked Sep 20, 2026	11-50	45 contacts →
	Partial evidence “Specialty Diving of Louisiana and its sister company, Specialty Offshore, offer underwater marine services to the private and public sectors in conjunction with extensive dive…” Source: RevenueBase Database · checked Sep 20, 2026
18	Sabine Surveyors, LTD	Strong evidence	Metairie, LA, United StatesHQ checked Sep 20, 2026	51-200	41 contacts →
	Strong evidence “Since 1968, Sabine Surveyors has provided the maritime industry with a wide array of services through our highly trained, educated, competent, and dedicated staff of marine…” Source: RevenueBase Database · checked Sep 20, 2026
19	Terrasond - Utec	Partial evidence	Palmer, AK, United StatesHQ checked Sep 20, 2026	51-200	38 contacts →
	Partial evidence “Provider of professional surveying services throughout the world safely, effectively, and economically.” Source: RevenueBase Database · checked Sep 20, 2026
20	Ocean Surveys, INC	Partial evidence	Old Saybrook, CT, United StatesHQ checked Sep 20, 2026	11-50	34 contacts →
	Partial evidence “OSI is a highly responsive hydrographic, geophysical, physical oceanographic surveying and sediment sampling firm staffed with scientists, hydrographers, engineers, and…” Source: RevenueBase Database · checked Sep 20, 2026
21	Fathom Resources LLC	Partial evidence	New Bedford, MA, United StatesHQ checked Sep 20, 2026	11-50	31 contacts →
	Partial evidence “Fathom Resources (Fathom), is a marine service provider established in 2002 with offices located in New Bedford, Massachusetts and Middletown, Rhode Island.” Source: RevenueBase Database · checked Sep 20, 2026
22	Shipwright LLC	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 20, 2026	11-50	29 contacts →
	Partial evidence “Shipwright is a global maritime technical consultancy and the world's maritime leader in client-focused solutions.” Source: RevenueBase Database · checked Sep 20, 2026
23	Herbert Engineering Corp	Indirect evidence	Alameda, CA, United StatesHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “Herbert Engineering Corp.(HEC) is an employee owned California corporation with offices in San Francisco, Annapolis, Houston, Glasgow, and Shanghai actively involved in the design…” Source: RevenueBase Database · checked Sep 20, 2026
24	Viking Systems	Partial evidence	Annapolis, MD, United StatesHQ checked Sep 20, 2026	11-50	28 contacts →
	Partial evidence “Viking Systems is a marine and naval architecture firm serving customers worldwide - operating a global presence with offices in Annapolis, Houston, Palm Beach, Copenhagen…” Source: RevenueBase Database · checked Sep 20, 2026
25	DLS Marine	Strong evidence	Metairie, LA, United StatesHQ checked Sep 20, 2026	51-200	28 contacts →
	Strong evidence “DLS Marine is a worldwide marine surveying firm that has served the industry for over 50 years with offices in New Orleans, Houston, Tampa and Norfolk.” Source: RevenueBase Database · checked Sep 20, 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 surveyor companies. 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 surveyor companies.
Partial evidence: Its own public description names part of marine surveyor companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine surveyor companies. 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 326 marine surveyor companies based in the United States

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Marine surveyor companies based in the United States at a glance

As of Sep 20, 2026

36.5%Verified-email coverage

26.1Average contacts per company

1-10Median size (employees)

8.6%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

215

11-50

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 326 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 surveyor companies, 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 surveyor companies”. 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 surveyor companies), 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 surveyor companies, 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, 3,100 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 20, 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 surveyor companies by metro

Marine surveyor companies in Houston28

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 surveyor companies, 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 surveyor companies are there based in the United States?

RevenueBase identified 326 marine surveyor companies 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?

American Bureau Of Shipping ABS, headquartered in Spring, tops this list with the largest team on record.

Which city has the most marine surveyor companies?

Houston leads with 28 headquartered companies, followed by Fort Lauderdale (16) and Miami (9).

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 3,100 verified decision-maker contacts tracked across these 326 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 20, 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.