Company lists · Data refreshed September 2026

Top 25 Maritime liability insurance companies based in the United States

Name: Maritime liability insurance 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 17, 2026 126 companies tracked

RevenueBase identified 126 maritime liability insurance companies headquartered in the United States as of September 2026 and tracks 1,630 professional contacts across them, including 665 with verified work emails. Miami is the largest hub.

This list covers maritime liability insurance 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 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

126Companies

1,630Contacts tracked

665Verified emails

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The 25 largest maritime liability insurance companies based in the United States

Ranked by team size

Top 25 of 126 maritime liability insurance companies 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 liability insurance 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	Falvey Insurance Group	Partial evidence	North Kingstown, RI, United StatesHQ checked Sep 17, 2026	51-200	228 contacts →
	Partial evidence “Falvey Insurance Group is one group with many solutions.” Source: RevenueBase Database · checked Sep 17, 2026
2	The American Equity Underwriters, INC	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 17, 2026	51-200	159 contacts →
	Indirect evidence “The American Equity Underwriters, Inc.(AEU) delivers specialized coverage and risk management solutions to waterfront employers across the United States.” Source: RevenueBase Database · checked Sep 17, 2026
3	Signal Mutual	Partial evidence	South Norwalk, CT, United StatesHQ checked Sep 17, 2026	51-200	117 contacts →
	Partial evidence “Signal Mutual Indemnity Association Ltd was established in 1986 to meet the demand for reasonable and stable longshore workers’ compensation insurance rates.” Source: RevenueBase Database · checked Sep 17, 2026
4	EIMC	Partial evidence	Jersey City, NJ, United StatesHQ checked Sep 17, 2026	11-50	87 contacts →
	Partial evidence “At EIMC, we are the trusted partner for marine insurance and global supply chain communities worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
5	Discovery Health MD	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	201-500	65 contacts →
	Partial evidence “Discovery Health is a medical risk management service for the commercial maritime industry, serving the men and women who make their living at sea.” Source: RevenueBase Database · checked Sep 17, 2026
6	American P&i Club	Indirect evidence	New York, NY, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Indirect evidence “Founded in New York in 1917, celebrating 106 years of service, the American Club is the only P&I mutual domiciled in the Americas.” Source: RevenueBase Database · checked Sep 17, 2026
7	International Marine Underwriters	Partial evidence	New York, NY, United StatesHQ checked Sep 17, 2026	201-500	49 contacts →
	Partial evidence “International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Source: RevenueBase Database · checked Sep 17, 2026
8	Berkley Offshore Underwriting Managers A Berkley Company	Strong evidence	New York, NY, United StatesHQ checked Sep 17, 2026	11-50	44 contacts →
	Strong evidence “Berkley Offshore is an insurance provider specialising in Energy Upstream, Energy Liability and Marine Insurance.” Source: RevenueBase Database · checked Sep 17, 2026
9	MHG Insurance	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 17, 2026	11-50	43 contacts →
	Partial evidence “MHG Insurance is a leading insurance brokerage providing insurance advice and solutions for seafarers, businesses and groups and individuals around the world.” Source: RevenueBase Database · checked Sep 17, 2026
10	One80 Marine	Partial evidence	Westbrook, CT, United StatesHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial evidence “Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Source: RevenueBase Database · checked Sep 17, 2026
11	Cargocorp Underwriters	Partial evidence	Miami, FL, United StatesHQ checked Sep 17, 2026	51-200	37 contacts →
	Partial evidence “Supply to our customers in the insurance industry, Reinsurance capacity in ALL MARINE LINES, with an INTEGRAL RISK MANAGEMENT PROGRAM across the entire logistics chain.” Source: RevenueBase Database · checked Sep 17, 2026
12	RB Jones	Indirect evidence	Farmington Hills, MI, United StatesHQ checked Sep 17, 2026	501-1,000	34 contacts →
	Indirect evidence “Founded in 1905, RB Jones is a leader in providing specialty risk coverage solutions to brokers, agents and wholesalers, including: Commercial Marine, Excess Energy, Commercial…” Source: RevenueBase Database · checked Sep 17, 2026
13	Griffin Underwriting Services	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 17, 2026	51-200	29 contacts →
	Partial evidence “Griffin Underwriting Services enables retail insurance agents and brokers to compete and win on hard-to-place risks.” Source: RevenueBase Database · checked Sep 17, 2026
14	BIEHL	Partial evidence	Houston, United StatesHQ checked Sep 17, 2026	51-200	29 contacts →
	Partial evidence “Founded in 1905, Biehl is a full service agency handling the needs of various maritime interests including ship owners / operators, charterers and cargo interests.” Source: RevenueBase Database · checked Sep 17, 2026
15	Oversea Insurance Agency	Partial evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “Established in 1978, we are a family run and fourth generation yacht insurance agency with offices in San Diego, Fort Lauderdale, and Kona.” Source: RevenueBase Database · checked Sep 17, 2026
16	ECIB	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “Expeditors Cargo Insurance Brokers (ECIB) provides risk management solutions tailored to the specific needs of our clients.” Source: RevenueBase Database · checked Sep 17, 2026
17	Continental Underwriters, LTD	Partial evidence	Covington, LA, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “Continental Underwriters, Ltd, provides all classes of commercial marine insurance coverages.” Source: RevenueBase Database · checked Sep 17, 2026
18	National Boat Owners Association	Partial evidence	Sarasota, FL, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “NBOA Marine Insurance is one of the largest boat insurance agencies in the country.” Source: RevenueBase Database · checked Sep 17, 2026
19	Gibson Robb & Lindh LLP	Indirect evidence	Emeryville, CA, United StatesHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Our attorneys have substantial litigation and appellate experience.” Source: RevenueBase Database · checked Sep 17, 2026
20	International Special Risks	Partial evidence	Lynnfield, MA, United StatesHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “International Special Risks, Inc.(ISR), with offices from Maine to Florida, is the largest Marine intermediary insurance broker on the East Coast.” Source: RevenueBase Database · checked Sep 17, 2026
21	Pmer Insurance Services	Partial evidence	Milwaukie, OR, United StatesHQ checked Sep 17, 2026	1-10	14 contacts →
	Partial evidence “Business and Personal Insurance; Special programs; Wet Marine experts (Yachts, Fish Boats, Charter Boats, marinas, etc); Workers' Compensation placements (all state); Lloyds of…” Source: RevenueBase Database · checked Sep 17, 2026
22	Nicoletti Hornig & Sweeney	Partial evidence	New York, NY, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “NICOLETTI HORNIG & SWEENEY is internationally recognized as one of the leading law firms in the United States in marine insurance, shipping and transportation litigation, and…” Source: RevenueBase Database · checked Sep 17, 2026
23	Seven Seas Insurance Company	Partial evidence	Riviera Beach, FL, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Seven Seas Insurance Company specializes in cargo insurance.” Source: RevenueBase Database · checked Sep 17, 2026
24	Onus Insurance	Indirect evidence	Miami, FL, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Nace de la necesidad del mercado logístico internacional, de contar con expertos en el área de riesgos durante el transporte de mercancías alrededor del mundo.” Source: RevenueBase Database · checked Sep 17, 2026
25	Independent Maritime Consulting LLC	Partial evidence	Plantation, FL, United StatesHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “With over 100 years of combined seagoing, claims, and technical experience, Independent Maritime Consulting LLC (IMC) provides surveying, claims, and casualty response services to…” 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 liability insurance 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 maritime liability insurance companies.
Partial evidence: Its own public description names part of maritime liability insurance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name maritime liability insurance 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 126 maritime liability insurance companies based in the United States

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Maritime liability insurance companies based in the United States at a glance

As of Sep 17, 2026

40.8%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · Miami

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 126 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 liability insurance 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 “maritime liability insurance 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 maritime liability insurance 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 maritime liability insurance 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, 665 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.

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 liability insurance 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 maritime liability insurance companies are there based in the United States?

RevenueBase identified 126 maritime liability insurance 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?

Falvey Insurance Group, headquartered in North Kingstown, tops this list with the largest team on record.

Which city has the most maritime liability insurance companies?

Miami leads with 9 headquartered companies, followed by New York (9) and Houston (7).

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 665 verified decision-maker contacts tracked across these 126 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.