CPT stands for Carriage Paid to and is one of the seven Incoterm rules for any mode of transport.
Under CPT (Carriage Paid to) terms, the seller is responsible for clearing the goods through customs and delivering them to a carrier at an agreed location. All transportation costs associated with moving the goods from where they are manufactured to the agreed location are under the sellers responsibility.
The risk of damage or loss to the goods is transferred from the seller to the buyer once goods have been delivered to the first carrier. Once the goods arrive at the first carrier the risk transfers to the buyer. Under CPT, the responsibility for getting insurance is on the buyer, not the seller.