Berth occupancy is a measure used by customers to judge the efficiency and competitiveness of a port. Berth occupancy is degree of utilisation of available berths, i.e. the time vessels are alongside the berth (Vessel Turnaround Time), as a percentage of the total berth time available. As berth occupancy increases, berth availability will decrease. When berth occupancy is sustained above 65% there is a higher risk of vessels having to queue (wait at anchor) for access to a berth