If the subject matter of insurance is the ship, the marine insurance is called:

Correct option is B

Marine insurance is a type of insurance that provides coverage for ships, cargo, and other marine-related risks. When the subject matter of insurance is the ship itself, the specific type of marine insurance that covers the ship's hull is known as hull insurance. Hull insurance provides protection against damage or loss to the ship's hull and machinery. Option A, cargo insurance, refers to insurance that covers the goods or cargo being transported by the ship. Option C, freight insurance, refers to insurance that covers the loss of freight revenue in case of certain specified events. Option D, voyage insurance, refers to insurance that covers a specific voyage or journey undertaken by the ship, including risks and perils associated with that particular voyage