Who Must File a Personal Property Declaration with the Assessor? Inland marine insurance is the form of property insurance coverage that covers materials and equipment when they are transported over land.Travelers' inland marine insurance coverage policy provides financial protection for a business's property that is transported on land. Speak with an agent. How do I fill this out? Personal inland marine insurance acts as an extension of your homeowner's insurance policy to offer additional coverage for personal belongings. Without inland marine coverage, your business's personal property is not covered if it is being transported off site. There is a standard ISO Inland Marine Form to provide this coverage. Inland Marine insurance generally covers property that is movable or transportable in nature. It is often used to cover property that needs broader protection.