四、CARGO SURVEY（20 分） Underwriters for the cargo may call for a warranty survey when high value cargo is to be shipped. The intention here is to protect the underwriters’ interests by ensuring that the carrier observes good practice, as stipulated by the surveyor. Shippers may call for surveys simply to protect their products from poor stowage, or to provide evidence of quality of the cargo at export. The pre-shipment surveys can be divided into two groups - those centered on the cargo and those centered on the compartment.