The main purpose of the Nationwide Marine Definition is to

This choice focuses on the specifics of import regulations rather than the broader scope of property classification in marine insurance. The Nationwide Marine Definition does not primarily concern itself with what imports can be sold or delivered but rather with the types of property that may be covered under marine policies.

While underwriting practices may involve tailoring coverage to address specific perils, the Nationwide Marine Definition itself does not serve this purpose. Instead, it establishes a consistent classification system that assists underwriters in determining insurability rather than customizing specific coverage details.

Although understanding insurable interest is important in insurance, the Nationwide Marine Definition is not aimed at defining this concept for shippers. Instead, it focuses on classifying property types that can be insured, which is a different aspect of marine insurance.