Which type of policy would cover risks related to the transportation of items across the continent?

Inland marine insurance is specifically designed to cover risks associated with the transportation of goods over land, including across continents. This type of insurance addresses losses that might occur while items are in transit, whether they are being transported by truck, train, or other means. It can also extend coverage to movable property and certain types of property that are not strictly tied to a specific location, such as equipment and tools.

The other types of insurance mentioned have different scopes. Property insurance generally covers damage to physical property but not the specifics of transportation. Maritime insurance pertains to marine-related activities and covers goods transported via waterways, not land. Aviation insurance focuses on aircraft and related liabilities, not the transportation of goods across land. Therefore, inland marine insurance is the most fitting type of policy for risks associated with transporting items across the continent.