Inland Marine insurance is designed to protect which of the following?

Inland Marine insurance is specifically designed to cover portable personal property, which is the focus of this type of insurance. This form of coverage offers protection for goods and equipment that are mobile in nature and can be transported over land, thus distinguishing it from standard marine insurance which primarily deals with maritime property.

The unique aspect of Inland Marine insurance is its ability to cover items that might not be easily covered under standard property insurance policies, especially when these items are being transported or stored away from the insured's primary location. This can include items like jewelry, artwork, electronics, and tools, making it essential for individuals and businesses that frequently move their valuable personal property.

In contrast, aircraft, heavy machinery, and private yachts fall under different categories of insurance. Aircraft insurance is tailored for aviation-related risks, while heavy machinery is typically covered under commercial equipment policies. Private yachts would be insured through marine insurance, which is distinct from inland marine coverage. Thus, the correct answer focuses on the essence of Inland Marine insurance as it pertains to movable personal property.