Third party service providers can pose serious risk and liabilities for marina and shipyard owners. Without the proper due diligence these marine companies could find themselves footing large bills should a dispute occur. As a California insurance agency that specializes in ocean marine insurance for boat yards, marinas, yacht clubs, and commercial boating vessels/fleets, McDermott Costa Insurance Brokers also educates clients about best practices for reducing risk. A third party service provider is any vendor that provides services either to the marina or customers that use the marina. Third parties include repair services, vessel cleaning services, yacht brokers, surveyors, etc.