United Marine offers five different boat insurance policies through three providers, including agreed or market value policies as well as a performance boat policy. It covers all types and classes of watercraft including personal watercraft, leisure boats, fishing vessels, charter boats, and yachts, and offers specialized coverages such as captain and crew liability for charter or fishing boats. It claims to be the only company to offer a Boaters Assistance Program with a consequential loss benefit on its yacht coverage. It also offers multiple specialized deductibles including a hurricane haul out deductible and a named storm deductible (NSD).

United Marine's website offers easy-to-read, detailed descriptions of its five policies, including the following highlighted sections: hull insurance, loss settlements, personal effects, deductibles, and add-on coverages. It offers a 90-second quick quote as well as detailed and expert information on boat-related topics in its newsletter, blog, and FAQ sections. It provides a live chat feature, yet it's unclear whether they offer 24/7 claims reporting or processing.

United Marine Underwriters works with three insurance companies: Ace American, American Modern Insurance Company, and Travelers Insurance. According to the company's website, all three underwriters hold A+ or higher A.M. Best ratings. The ratings and direct premiums earned shown in this review are for Travelers Casualty and Surety Company of America, A.M. Best's ultimate parent company for Travelers Insurance. It has a superior A.M. Best rating as well as excellent Standard and Poor's Financial and Moody's ratings. The company had more than $292 million in direct premiums earned in 2017 for all products including boat insurance. United Marine has a BBB rating of A+ with 0 negative reviews, yet doesn't have a presence on Trustpilot.com.