The types of insurance for marine cargo transportation insurance in the United States are generally divided into three categories, namely basic insurance, supplementary insurance and special insurance. Basic insurance refers to insurance that can be insured independently. Such as Ping An insurance, water damage insurance and all risks in the insurance clauses of the People's Insurance Company of China, ICC (A), ICC (B) and ICC (C) in the insurance clauses of the London Insurance Association. Supplementary insurance refers to the type of insurance that is additionally covered on the basis of the basic insurance. The additional insurance cannot be insured separately. The US special line can only be insured when the basic insurance is insured, such as IC.C (malicious damage insurance). Special insurance means that for some special goods, because their properties are different from general goods, special provisions for their characteristics are required to cover. Special insurance can be underwritten separately and does not have to be attached to basic insurance items, such as maritime transport refrigerated cargo insurance, maritime transport bulk tung oil insurance, and various association special insurance clauses. American Line