Company lists · Data refreshed September 2026
Top 25 Inland marine insurance underwriters based in the United States
RevenueBase identified 77 company matches for inland marine insurance underwriters associated with the United States as of September 2026 and tracks 2,453 professional contacts across them, including 1,410 with verified work emails. Houston is the largest hub.
This list covers company matches for inland marine insurance underwriters 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.
The 25 largest inland marine insurance underwriters based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 635 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 2 | 363 contacts → | ||||
Exact match “Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 3 | 335 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 4 | 133 contacts → | ||||
Exact match “Turn Services is one of the largest independent fleeting and shifting companies in the United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 5 | 71 contacts → | ||||
Exact match “Cochrane & Company was established in 1960 in Spokane, Washington.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 6 | 62 contacts → | ||||
Exact match “Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 7 | 49 contacts → | ||||
Exact match “Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 8 | 49 contacts → | ||||
Exact match “International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 9 | 44 contacts → | ||||
Exact match “Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 10 | 42 contacts → | ||||
Exact match “We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 11 | 42 contacts → | ||||
Exact match “Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 12 | 37 contacts → | ||||
Exact match “Old Republic Inland Marine is a collaborative team of highly specialized, experienced underwriters with the authority to deliver thoughtful, timely underwriting decisions for…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 13 | 25 contacts → | ||||
Exact match “Trident Marine Managers is a leading specialty marine and offshore energy managing general underwriter (MGU) that delivers capacity and solid protection.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 14 | 25 contacts → | ||||
Exact match “NBIS specializes in providing policyholders with the most effective risk management products and innovative insurance solutions for the heavy construction and related…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 15 | 18 contacts → | ||||
Exact match “Continental Underwriters, Ltd, provides all classes of commercial marine insurance coverages.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 16 | 16 contacts → | ||||
Exact match “International Special Risks, Inc.(ISR), with offices from Maine to Florida, is the largest Marine intermediary insurance broker on the East Coast.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 17 | 14 contacts → | ||||
Exact match “Business and Personal Insurance; Special programs; Wet Marine experts (Yachts, Fish Boats, Charter Boats, marinas, etc); Workers' Compensation placements (all state); Lloyds of…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 18 | 13 contacts → | ||||
Exact match “Seven Seas Insurance Company specializes in cargo insurance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 19 | 10 contacts → | ||||
Exact match “AMG Insurance International was established to fill the relationship gap in the marine insurance industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 20 | 7 contacts → | ||||
Exact match “Founded in 1989 by Hillary Swiggett, Boater’s Insurance Agency, Inc.(BIA) is a family owned and operated agency that specializes in providing insurance products and services…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 21 | 6 contacts → | ||||
Exact match “SkiSafe™ is a premier “specialty” provider of personal pleasure boat, yacht, and watercraft insurance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “Capacity Marine Corporation is an insurance company based out of 1 International Blvd, Mahwah, New Jersey, United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “Our Founder is a former Merchant Mariner and we've stayed true to our marine roots.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “Southern Marine is a marine insurance specialist headquartered in Houston, Texas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “Founded in 1930, Inland Marine Underwriters Association (IMUA) is the national association for the commercial inland marine insurance industry in the US.” 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 “inland marine insurance underwriters”. 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 77 inland marine insurance underwriters based in the United States
See the full list, filter by size, metro and specialty, and access 1,410 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Inland marine insurance underwriters based in the United States at a glance
As of Sep 17, 2026Companies by employee count
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 77 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 “inland marine insurance 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. 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 1,410 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 “inland marine insurance underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many inland marine insurance underwriters are there based in the United States?
RevenueBase identified 77 company matches for inland marine insurance underwriters 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?
Core Specialty Insurance Holdings, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most inland marine insurance underwriters?
Houston leads with 3 company records, followed by New Orleans (3) and New York (3).
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 1,410 professional contacts with verified work emails tracked across these 77 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.
Ready to reach these companies? Verified emails and direct dials for all 77 inland marine insurance underwriters based in the United States. Start with a free account, no credit card.
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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.
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Company intelligence · public preview
Top 25 inland marine insurance underwriters based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 77 matching company records for inland marine insurance underwriters based in the United States, with 2,453 tracked contacts and 1,410 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 17, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 inland marine insurance underwriters based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Core Specialty Insurance Holdings, INCcorespecialty.comHQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 635 contacts → |
“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Palomarplmr.comHQ: La Jolla, CA, United StatesReported employees: 501-1,000 | La Jolla, CA, United States | 501-1,000 | Exact match | 363 contacts → |
“Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Atlantic Casualty Insurance COatlanticcasualty.netHQ: Goldsboro, NC, United StatesReported employees: 201-500 | Goldsboro, NC, United States | 201-500 | Exact match | 335 contacts → |
“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 description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Turn Servicesturnservices.com HQ: New Orleans, LA, United StatesReported employees: 201-500 | New Orleans, LA, United States | 201-500 | Exact match | 133 contacts → |
“Turn Services is one of the largest independent fleeting and shifting companies in the United States.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cochrane & Companymarketing.cochraneco.com HQ: Spokane, WA, United StatesReported employees: 51-200 | Spokane, WA, United States | 51-200 | Exact match | 71 contacts → |
“Cochrane & Company was established in 1960 in Spokane, Washington.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Berkley Fire & Marine A Berkley Companyberkleymarine.comHQ: Schaumburg, IL, United StatesReported employees: 5,001-10,000 | Schaumburg, IL, United States | 5,001-10,000 | Exact match | 62 contacts → |
“Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Waterford, MI, United StatesReported employees: 11-50 | Waterford, MI, United States | 11-50 | Exact match | 49 contacts → |
“Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 49 contacts → |
“International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Deans & Homerdeanshomer.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 44 contacts → |
“Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Riscom Regional Insurance Services Company, LLCriscomins.comHQ: Shreveport, LA, United StatesReported employees: 51-200 | Shreveport, LA, United States | 51-200 | Exact match | 42 contacts → |
“We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  One80 Marineone80intermediaries.comHQ: Westbrook, CT, United StatesReported employees: 51-200 | Westbrook, CT, United States | 51-200 | Exact match | 42 contacts → |
“Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  OLD Republic Inland Marineoldrepublicinlandmarine.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 37 contacts → |
“Old Republic Inland Marine is a collaborative team of highly specialized, experienced underwriters with the authority to deliver thoughtful, timely underwriting decisions for…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Trident Marine Managerstridentmm.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 25 contacts → |
“Trident Marine Managers is a leading specialty marine and offshore energy managing general underwriter (MGU) that delivers capacity and solid protection.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Nbis, A Dual Companynbis.com HQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 25 contacts → |
“NBIS specializes in providing policyholders with the most effective risk management products and innovative insurance solutions for the heavy construction and related…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Continental Underwriters, LTDcultd.com HQ: Covington, LA, United StatesReported employees: 11-50 | Covington, LA, United States | 11-50 | Exact match | 18 contacts → |
“Continental Underwriters, Ltd, provides all classes of commercial marine insurance coverages.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | International Special Risksisr-insurance.com HQ: Lynnfield, MA, United StatesReported employees: 11-50 | Lynnfield, MA, United States | 11-50 | Exact match | 16 contacts → |
“International Special Risks, Inc.(ISR), with offices from Maine to Florida, is the largest Marine intermediary insurance broker on the East Coast.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Pmer Insurance Servicespac-mar.com HQ: Milwaukie, OR, United StatesReported employees: 1-10 | Milwaukie, OR, United States | 1-10 | Exact match | 14 contacts → |
“Business and Personal Insurance; Special programs; Wet Marine experts (Yachts, Fish Boats, Charter Boats, marinas, etc); Workers' Compensation placements (all state); Lloyds of…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Seven Seas Insurance Companysevenseasins.com HQ: Riviera Beach, FL, United StatesReported employees: 11-50 | Riviera Beach, FL, United States | 11-50 | Exact match | 13 contacts → |
“Seven Seas Insurance Company specializes in cargo insurance.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  AMG Insurance International LLCamginsuranceintl.comHQ: West Palm Beach, FL, United StatesReported employees: 1-10 | West Palm Beach, FL, United States | 1-10 | Exact match | 10 contacts → |
“AMG Insurance International was established to fill the relationship gap in the marine insurance industry.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: Danville, CA, United StatesReported employees: 11-50 | Danville, CA, United States | 11-50 | Exact match | 7 contacts → |
“Founded in 1989 by Hillary Swiggett, Boater’s Insurance Agency, Inc.(BIA) is a family owned and operated agency that specializes in providing insurance products and services…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Skisafeskisafe.com HQ: New Hyde Park, NY, United StatesReported employees: 11-50 | New Hyde Park, NY, United States | 11-50 | Exact match | 6 contacts → |
“SkiSafe™ is a premier “specialty” provider of personal pleasure boat, yacht, and watercraft insurance.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Capacity Marine Corporationcapacitymarine.com HQ: Mahwah, NJ, United StatesReported employees: 1-10 | Mahwah, NJ, United States | 1-10 | Exact match | 6 contacts → |
“Capacity Marine Corporation is an insurance company based out of 1 International Blvd, Mahwah, New Jersey, United States.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  American Marine Insurance SVCamericanmarineinsurance.comHQ: Ventura, CA, United StatesReported employees: 1-10 | Ventura, CA, United States | 1-10 | Exact match | 5 contacts → |
“Our Founder is a former Merchant Mariner and we've stayed true to our marine roots.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Southern Marinesouthernmarineinsurance.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 5 contacts → |
“Southern Marine is a marine insurance specialist headquartered in Houston, Texas.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 4 contacts → |
“Founded in 1930, Inland Marine Underwriters Association (IMUA) is the national association for the commercial inland marine insurance industry in the US.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 77 company matches
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Inland marine insurance underwriters: dataset insights
September 17, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
77 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 77 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 17, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for inland marine insurance underwriters?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many inland marine insurance underwriters did RevenueBase find based in the United States?
The saved snapshot records 77 matching company records, 2,453 tracked contacts and 1,410 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 17, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 inland marine insurance underwriters based in the United States. Snapshot: September 17, 2026. https://revenuebase.ai/companies/inland-marine-insurance-underwriters/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States
Company intelligence · public preview
Top 25 inland marine insurance underwriters based in the United States
RevenueBase records 77 matching company records for inland marine insurance underwriters based in the United States, with 2,453 tracked contacts and 1,410 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 17, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 inland marine insurance underwriters based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Core Specialty Insurance Holdings, INCcorespecialty.com HQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 635 contacts → |
“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Palomarplmr.com HQ: La Jolla, CA, United StatesReported employees: 501-1,000 | La Jolla, CA, United States | 501-1,000 | Exact match | 363 contacts → |
“Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Atlantic Casualty Insurance COatlanticcasualty.net HQ: Goldsboro, NC, United StatesReported employees: 201-500 | Goldsboro, NC, United States | 201-500 | Exact match | 335 contacts → |
“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 description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Turn Servicesturnservices.com HQ: New Orleans, LA, United StatesReported employees: 201-500 | New Orleans, LA, United States | 201-500 | Exact match | 133 contacts → |
“Turn Services is one of the largest independent fleeting and shifting companies in the United States.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cochrane & Companymarketing.cochraneco.com HQ: Spokane, WA, United StatesReported employees: 51-200 | Spokane, WA, United States | 51-200 | Exact match | 71 contacts → |
“Cochrane & Company was established in 1960 in Spokane, Washington.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Berkley Fire & Marine A Berkley Companyberkleymarine.com HQ: Schaumburg, IL, United StatesReported employees: 5,001-10,000 | Schaumburg, IL, United States | 5,001-10,000 | Exact match | 62 contacts → |
“Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Waterford, MI, United StatesReported employees: 11-50 | Waterford, MI, United States | 11-50 | Exact match | 49 contacts → |
“Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 49 contacts → |
“International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Deans & Homerdeanshomer.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 44 contacts → |
“Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Riscom Regional Insurance Services Company, LLCriscomins.com HQ: Shreveport, LA, United StatesReported employees: 51-200 | Shreveport, LA, United States | 51-200 | Exact match | 42 contacts → |
“We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | One80 Marineone80intermediaries.com HQ: Westbrook, CT, United StatesReported employees: 51-200 | Westbrook, CT, United States | 51-200 | Exact match | 42 contacts → |
“Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | OLD Republic Inland Marineoldrepublicinlandmarine.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 37 contacts → |
“Old Republic Inland Marine is a collaborative team of highly specialized, experienced underwriters with the authority to deliver thoughtful, timely underwriting decisions for…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Trident Marine Managerstridentmm.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 25 contacts → |
“Trident Marine Managers is a leading specialty marine and offshore energy managing general underwriter (MGU) that delivers capacity and solid protection.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Nbis, A Dual Companynbis.com HQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 25 contacts → |
“NBIS specializes in providing policyholders with the most effective risk management products and innovative insurance solutions for the heavy construction and related…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Continental Underwriters, LTDcultd.com HQ: Covington, LA, United StatesReported employees: 11-50 | Covington, LA, United States | 11-50 | Exact match | 18 contacts → |
“Continental Underwriters, Ltd, provides all classes of commercial marine insurance coverages.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | International Special Risksisr-insurance.com HQ: Lynnfield, MA, United StatesReported employees: 11-50 | Lynnfield, MA, United States | 11-50 | Exact match | 16 contacts → |
“International Special Risks, Inc.(ISR), with offices from Maine to Florida, is the largest Marine intermediary insurance broker on the East Coast.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Pmer Insurance Servicespac-mar.com HQ: Milwaukie, OR, United StatesReported employees: 1-10 | Milwaukie, OR, United States | 1-10 | Exact match | 14 contacts → |
“Business and Personal Insurance; Special programs; Wet Marine experts (Yachts, Fish Boats, Charter Boats, marinas, etc); Workers' Compensation placements (all state); Lloyds of…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Seven Seas Insurance Companysevenseasins.com HQ: Riviera Beach, FL, United StatesReported employees: 11-50 | Riviera Beach, FL, United States | 11-50 | Exact match | 13 contacts → |
“Seven Seas Insurance Company specializes in cargo insurance.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | AMG Insurance International LLCamginsuranceintl.com HQ: West Palm Beach, FL, United StatesReported employees: 1-10 | West Palm Beach, FL, United States | 1-10 | Exact match | 10 contacts → |
“AMG Insurance International was established to fill the relationship gap in the marine insurance industry.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: Danville, CA, United StatesReported employees: 11-50 | Danville, CA, United States | 11-50 | Exact match | 7 contacts → |
“Founded in 1989 by Hillary Swiggett, Boater’s Insurance Agency, Inc.(BIA) is a family owned and operated agency that specializes in providing insurance products and services…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Skisafeskisafe.com HQ: New Hyde Park, NY, United StatesReported employees: 11-50 | New Hyde Park, NY, United States | 11-50 | Exact match | 6 contacts → |
“SkiSafe™ is a premier “specialty” provider of personal pleasure boat, yacht, and watercraft insurance.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Capacity Marine Corporationcapacitymarine.com HQ: Mahwah, NJ, United StatesReported employees: 1-10 | Mahwah, NJ, United States | 1-10 | Exact match | 6 contacts → |
“Capacity Marine Corporation is an insurance company based out of 1 International Blvd, Mahwah, New Jersey, United States.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | American Marine Insurance SVCamericanmarineinsurance.com HQ: Ventura, CA, United StatesReported employees: 1-10 | Ventura, CA, United States | 1-10 | Exact match | 5 contacts → |
“Our Founder is a former Merchant Mariner and we've stayed true to our marine roots.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Southern Marinesouthernmarineinsurance.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 5 contacts → |
“Southern Marine is a marine insurance specialist headquartered in Houston, Texas.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 4 contacts → |
“Founded in 1930, Inland Marine Underwriters Association (IMUA) is the national association for the commercial inland marine insurance industry in the US.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Inland marine insurance underwriters: dataset insights
September 17, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
77 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 77 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 17, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for inland marine insurance underwriters?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many inland marine insurance underwriters did RevenueBase find based in the United States?
The saved snapshot records 77 matching company records, 2,453 tracked contacts and 1,410 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 17, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 inland marine insurance underwriters based in the United States. Snapshot: September 17, 2026. https://revenuebase.ai/companies/inland-marine-insurance-underwriters/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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