Which of the following is NOT a risk subject to inland marine insurance?

Inland marine insurance is designed to cover property that is in transit or property that is movable, which typically includes various types of cargo and materials. Large pleasure boats generally fall under the category of marine insurance, which focuses on watercraft and related assets, rather than inland marine insurance that primarily covers goods and equipment over land.

The other options provided all relate to property that is covered under inland marine policies. Property stored at a warehouse is at risk of damage or loss in transit, making it a candidate for inland marine coverage. Shipments made by freight train involve goods that are transported across land, which is precisely what inland marine insurance addresses. Similarly, cargo transported by truck involves moving property over land, further solidifying its relevance under inland marine policies.

Therefore, large pleasure boats do not fit within the scope of inland marine insurance, making this choice the correct answer.