Container slot management (CSM). The objective of this management in a liner operatorβs corporate plane is to achieve the best utilisation factors of the container spaces or slots available on-board the carrierβs own vessels. The revenue is increased by the volume of the goods carried. If slot space cannot be found in the carrierβs vessels, the carrier may use βvessel sharing arrangementsβ (VSA) with other carriers under which slots on-board vessels are reserved for fellow carriers.