Directory · Maryland · Ocean marine

Who writes ocean marine in Maryland

Top insurer groups from the NAIC market share report; the state's list carries no lines of authority.

Chubb Ltd Group wrote the most ocean marine in Maryland in 2025, $15.2M and 19.4% of the state's premium; the top five groups hold 54%. Maryland's company list doesn't say which lines each company is licensed for, so the ranking below is the NAIC's top 10 groups; every licensed company is on the Maryland page.

By Sam Alishahi, independent insurance broker · All lines in Maryland

Top 10 · NAIC table: 08 - Ocean Marine

The insurer groups that write the most ocean marine in Maryland

Top 10 insurer groups by direct premium written in 2025, from the NAIC's Market Share Reports for Property/Casualty Groups and Companies by State. A group is the parent and its insurance companies together; share is the group's part of the state total for the line; loss ratio is losses incurred over premium earned.

#	Insurer group	Premium written	Share	Loss ratio	Member companies here
1	Chubb Ltd Group	$15.2M	19.43%	31%	Federal Insurance Company, Ace American Insurance Company, Ace Property and Casualty Insurance Company, Chubb Lloyd's Insurance Company of Texas
2	Travelers Group	$10.7M	13.72%	32%	Travelers Property Casualty Company of America, Standard Fire Insurance Company (The), Travelers Personal Insurance Company, Travelers Casualty and Surety Company of America
3	American International Group	$7.3M	9.30%	26%	National Union Fire Insurance Company of Pittsburgh, Pennsylvania, AIG Property Casualty Company, Lexington Insurance Company, AIU Insurance Company
4	The Hanover Insurance Group	$5.1M	6.48%	49%	Hanover Insurance Company (The), Allmerica Financial Benefit Insurance Company, Massachusetts Bay Insurance Company, Citizens Insurance Company of America
5	Markel Group	$4.1M	5.19%	52%	State National Insurance Company, Inc., Markel Insurance Company, Markel American Insurance Company, Essentia Insurance Company
6	American Financial Group	$3.5M	4.42%	22%	Great American Insurance Company, Great American Assurance Company, National Interstate Insurance Company, Great American Alliance Insurance Company
7	Intact Financial Group	$3.4M	4.36%	29%	Atlantic Specialty Insurance Company, Homeland Insurance Company of New York, OBI National Insurance Company, Homeland Insurance Company of Delaware
8	Wr Berkley Corporation Group	$2.6M	3.36%	38%	Berkley Assurance Company, Berkley National Insurance Company, Carolina Casualty Insurance Company, StarNet Insurance Company
9	Swiss Re Group	$1.9M	2.44%	34%	Swiss Re Corporate Solutions Elite Insurance Corporation, Swiss Re Corporate Solutions America Insurance Corporation, Swiss Re Corporate Solutions Capacity Insurance Corporation, Swiss Re Corporate Solutuions Premier Insurance Corporation
10	Tokio Marine Holdings Inc Group	$1.8M	2.25%	103%	Philadelphia Indemnity Insurance Company, Privilege Underwriters Reciprocal Exchange, PURE Risk Mgt, Atty-in-Fact, Safety National Casualty Corporation, Producers Agriculture Insurance Company

Turned down?

Last resort for ocean marine in Maryland

Last resort	Lines	Where	How to get in
Surplus lines and Lloyd's open market	all	all states, under each state's diligent-search rules	Through surplus lines wholesalers; commercial property and liability have no guaranteed plan, so this is their last step	Source

Method and source

Source: the Maryland Insurance Administration company list, read 2026-10-17. Maryland's active list includes U.S. surplus lines carriers; type comes from each company's popup, which this fetch does not open. "Premium" is direct premium written in the state for the year shown; "share" is that company's part of the state total for the line. A company can be licensed for a line and write none of it, and a surplus lines insurer can write a line without a state license for it.

Open to use. Cite "Alishahi Insurance insurance company directory" and link here. CSV · JSON.

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