Company lists · Data refreshed November 2026

Top 25 Marine liability underwriters worldwide

RevenueBase identified 480 company matches for marine liability underwriters worldwide as of November 2026 and tracks 10,376 professional contacts across them, including 4,755 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for marine liability underwriters worldwide, 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 November 6, 2026. Country and city lists for marine liability underwriters follow the table.

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 Nov 6, 2026 How this list was built
480Companies
10,376Contacts tracked
4,755Verified emails
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The 25 largest marine liability underwriters worldwide

Ranked by team size
Top 25 of 480 company matches for marine liability underwriters worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20261,001-5,000690 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchArendal, NorwayHQ recorded Nov 6, 2026501-1,000671 contacts →

Exact match

“Gard is a shipowner-controlled provider of P&I, marine and energy insurance products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Nov 6, 2026501-1,000623 contacts →

Exact match

“The home of NorthStandard updates.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGoldsboro, VA, United StatesHQ recorded Nov 6, 2026201-500337 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchOslo, NorwayHQ recorded Nov 6, 2026201-500326 contacts →

Exact match

“World leading marine insurer, second-to-none service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon Ec3m 5bn, United KingdomHQ recorded Nov 6, 2026201-500220 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchGenoa, ItalyHQ recorded Nov 6, 2026201-500217 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchHong Kong, LuxembourgHQ recorded Nov 6, 202651-200212 contacts →

Exact match

“The Shipowners’ Club is a mutual insurance association.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200203 contacts →

Exact match

“Rokstone is one of the world’s largest MGAs, with offices in the UK, Europe, USA, Asia, Africa and the Middle East.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPort Of Spain, Trinidad and TobagoHQ recorded Nov 6, 2026201-500198 contacts →

Exact match

“Incorporated as Colonial Fire & General Insurance Company Limited in 1955 by the late Cyril Lucius Duprey the founder of CLICO.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGothenburg, SwedenHQ recorded Nov 6, 202651-200192 contacts →

Exact match

“The shipping industry is an ever-changing landscape.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchRotterdam, NetherlandsHQ recorded Nov 6, 2026n/a179 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMobile, AL, United StatesHQ recorded Nov 6, 202651-200175 contacts →

Exact match

“The American Equity Underwriters, Inc.(AEU) delivers specialized coverage and risk management solutions to waterfront employers across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKong, LuxembourgHQ recorded Nov 6, 202651-200174 contacts →

Exact match

“West is a leading mutual marine insurer providing its worldwide membership of shipowners, charterers and operators with liability insurance and related services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact match33735, FranceHQ recorded Nov 6, 202651-200170 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBergen, NorwayHQ recorded Nov 6, 202651-200170 contacts →

Exact match

“Norwegian Hull Club is a leading global marine and energy insurance provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMariehamn, Aland IslandsHQ recorded Nov 6, 202651-200131 contacts →

Exact match

“Alandia Insurance is an insurance group based in the Åland Islands with strong connections to the shipping industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSouth Norwalk, CT, United StatesHQ recorded Nov 6, 202651-200127 contacts →

Exact match

“Signal Mutual Indemnity Association Ltd was established in 1986 to meet the demand for reasonable and stable longshore workers’ compensation insurance rates.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGenoa (genova), ItalyHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBergen, NorwayHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“Marine Benefits is a global leader in insurance solutions for seafarers and their families.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchJersey City, United StatesHQ recorded Nov 6, 202611-5093 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“TT Club is the international transport and logistics industry’s leading provider of insurance and related risk management services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“London P&I is a leading, globally connected, mutual marine insurer our members can depend on.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSpokane, WA, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Cochrane & Company was established in 1960 in Spokane, Washington.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 480 marine liability underwriters worldwide

See the full list, filter by size, metro and specialty, and access 4,755 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marine liability underwriters worldwide at a glance

As of Nov 6, 2026
45.8%Verified-email coverage
21.6Average contacts per company
11-50Median size (employees)
11.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
227
11-50
161
51-200
54
201-500
19
501-1,000
9
1,001-5,000
3
10001+
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for marine liability underwriters are linked below.
What qualifies
Company records worldwide whose business descriptions match “marine liability underwriters” 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. 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 4,755 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 November 6, 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.

Marine liability underwriters by location

4 lists · largest first

Every Marine liability underwriters list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “marine liability underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many marine liability underwriters are there worldwide?

RevenueBase identified 480 company matches for marine liability underwriters worldwide as of November 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?

Core Specialty Insurance Holdings, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most marine liability underwriters?

The United States leads with 96 companies, followed by the United Kingdom (84) and Germany (29). Every marine liability underwriters list by country and city is linked on this page.

Which city has the most marine liability underwriters?

London leads with 54 company records, followed by Hamburg (17) and Bergen (6).

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 4,755 professional contacts with verified work emails tracked across these 480 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 November 6, 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.