Company lists · Data refreshed September 2026

Top 25 Commercial marine insurance providers worldwide

RevenueBase identified 730 commercial marine insurance providers worldwide as of September 2026 and tracks 16,002 professional contacts across them, including 5,462 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers commercial marine insurance providers worldwide, 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 16, 2026. Country and city lists for commercial marine insurance providers follow the table.

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 16, 2026 86% judged on-target in blind review
730Companies
16,002Contacts tracked
5,462Verified emails
0Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest commercial marine insurance providers worldwide

Ranked by team size
Top 25 of 730 commercial marine insurance providers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial marine insurance providers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceSao Paulo, BrazilHQ checked Sep 16, 2026501-1,0001,844 contacts →

Partial evidence

“Sompo Seguros S.A is a subsidiary of Sompo International, the company responsible for the insurance and reinsurance operations of the Sompo Holdings Group outside Japan.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceMumbai, IndiaHQ checked Sep 16, 20261,001-5,0001,535 contacts →

Indirect evidence

“Sanoti Properties LLP, an entity jointly held by Adar Poonawalla (90%) and Rising Sun Holdings Pvt.”

Source: RevenueBase Database · checked Sep 16, 2026
3Strong evidenceCincinnati, OH, United StatesHQ checked Sep 16, 20261,001-5,000635 contacts →

Strong evidence

“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceNewcastle Upon Tyne, United KingdomHQ checked Sep 16, 2026501-1,000584 contacts →

Indirect evidence

“The home of NorthStandard updates.”

Source: RevenueBase Database · checked Sep 16, 2026
5Partial evidenceLe Havre, FranceHQ checked Sep 16, 2026501-1,000532 contacts →

Partial evidence

“Assureur spécialiste des risques d'entreprise • 1er Assureur Maritime et Transport en France • + de 510 collaborateurs | Top Employer 2026 • CA de 580 millions d'euros en 2025 •…”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceLondon, United KingdomHQ checked Sep 16, 2026501-1,000449 contacts →

Indirect evidence

“At SSY, we believe that experience matters.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceVadodara, IndiaHQ checked Sep 16, 2026201-500358 contacts →

Partial evidence

“UNISON was established on the basic principle of creating transparency and convenience in the otherwise opaque and cumbersome practices in the Insurance Market in India.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceGoldsboro, NC, United StatesHQ checked Sep 16, 2026201-500335 contacts →

Partial evidence

“Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500330 contacts →

Partial evidence

“At Arch Insurance, we trade how you want to trade.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceNorth Kingstown, RI, United StatesHQ checked Sep 16, 202651-200228 contacts →

Partial evidence

“Falvey Insurance Group is one group with many solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceLondon Ec3m 5bn, United KingdomHQ checked Sep 16, 2026201-500215 contacts →

Partial evidence

“Newline Group is a market leading specialty insurance group that operates through three underwriting platforms: Newline Syndicate 1218 at Lloyd’s, Newline Insurance Company…”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 16, 202651-200202 contacts →

Indirect evidence

“A ESSOR Seguros S.A.”

Source: RevenueBase Database · checked Sep 16, 2026
13Strong evidenceGenoa, ItalyHQ checked Sep 16, 2026201-500189 contacts →

Strong evidence

“Cambiaso Risso Marine, with its main office in Genoa and further centres of excellence in Italy, Athens, Singapore and Bergen, is a leading insurance broking and consulting…”

Source: RevenueBase Database · checked Sep 16, 2026
14Strong evidenceRotterdam, NetherlandsHQ checked Sep 16, 2026n/a176 contacts →

Strong evidence

“Post & Co is a fourth generation, family owned and fully independent underwriting agent and insurance intermediary, specialised in marine liabilities, multimodal transport…”

Source: RevenueBase Database · checked Sep 16, 2026
15Strong evidence33735, FranceHQ checked Sep 16, 202651-200159 contacts →

Strong evidence

“Sector of activity: Marine Insurance Brokerage Our slogan “At the heart of International Trade, Shipping & Industry” reflects the vision of FILHET-ALLARD MARITIME (FAM)…”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceMobile, AL, United StatesHQ checked Sep 16, 202651-200159 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 16, 2026
17Partial evidenceSidcup, United KingdomHQ checked Sep 16, 2026201-500140 contacts →

Partial evidence

“Since 1861, W K Webster & Co Ltd has built up an impressive reputation for excellence in the field of marine & transit claims consultancy worldwide.”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceMelbourne, AustraliaHQ checked Sep 16, 202651-200111 contacts →

Partial evidence

“As Australia’s largest boat insurance provider, we have been protecting the needs of Australian boaties since 1959 and know what’s important when it comes to boat insurance.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceGenoa (genova), ItalyHQ checked Sep 16, 202651-200103 contacts →

Partial evidence

“Established in 1968, banchero costa is one of the world's leading brokerage houses in the maritime sector offering a full range of services to the global shipping industry.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceGenoa, ItalyHQ checked Sep 16, 202651-200102 contacts →

Indirect evidence

“P.L.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceBlumenau, BrazilHQ checked Sep 16, 202651-20095 contacts →

Indirect evidence

“A Áthina Administradora e Corretora de Seguros Ltda.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceNew York, NY, United StatesHQ checked Sep 16, 202651-20092 contacts →

Partial evidence

“Founded in 1861, Foa & Son are international insurance brokers based in New York City.”

Source: RevenueBase Database · checked Sep 16, 2026
23Strong evidenceJersey City, NJ, United StatesHQ checked Sep 16, 202611-5087 contacts →

Strong evidence

“At EIMC, we are the trusted partner for marine insurance and global supply chain communities worldwide.”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceHamburg, GermanyHQ checked Sep 16, 202651-20081 contacts →

Strong evidence

“GEORG DUNCKER is one of the largest independent and privately-owned marine insurance brokers with more than 150 years of successful operation in the maritime sector.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceClearwater, FL, United StatesHQ checked Sep 16, 202651-20081 contacts →

Partial evidence

“Our professional team of financing and insurance specialists have years of experience and are available to help answer your questions throughout the process.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 730 commercial marine insurance providers worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,462 reachable decision-makers.

Free signup · no credit card

View the full list →

Commercial marine insurance providers worldwide at a glance

As of Sep 16, 2026
34.1%Verified-email coverage
21.9Average contacts per company
11-50Median size (employees)
9.9%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
345
11-50
256
51-200
80
201-500
26
501-1,000
10
1,001-5,000
4
5,001-10,000
1
10001+
2

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 commercial marine insurance providers, 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.
Coverage
11 countries, largest first: the United States, the United Kingdom, Germany, Brazil, India, Greece, Italy, Australia, France, the Netherlands and 1 more. Country and city lists for commercial marine insurance providers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “commercial marine insurance providers”. 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 commercial marine insurance providers), 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 commercial marine insurance providers, and records with no verified work email.
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, 5,462 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 16, 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.

Commercial marine insurance providers by location

11 lists · largest first

Every Commercial marine insurance providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 commercial marine insurance providers, 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 commercial marine insurance providers are there worldwide?

RevenueBase identified 730 commercial marine insurance providers worldwide 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?

Sompo Seguros, headquartered in Sao Paulo, tops this list with the largest team on record.

Which country has the most commercial marine insurance providers?

The United States leads with 207 companies, followed by the United Kingdom (158) and Germany (67). Every commercial marine insurance providers list by country and city is linked on this page.

Which city has the most commercial marine insurance providers?

London leads with 72 headquartered companies, followed by Hamburg (33) and New York (13).

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 5,462 verified decision-maker contacts tracked across these 730 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 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 730 commercial marine insurance providers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.