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The operating model is based on real-time information exchange .
Of the two models , Just in Time Port Arrival is more self-explanatory , simply meaning that a vessel arrives at the port at the right time , as planned , just before loading or unloading begins . The operating model is based on real-time information exchange between the vessel , port and other stakeholders , which enables efficient scheduling and smooth traffic .
The main idea of the Virtual Port Arrival , on the other hand , is the creation of an operating model that provides information to vessels if there is no berth available at the port at the planned time . In this case , the vessel can slow down its speed and aim its arrival to the time when a berth will be available .
A vessel acknowledges its berth reservation to the port virtually , in which case it is recognized that the vessel is arriving at the port after the berth is made available and the vessel is normally in the service queue . This model generates clear savings in fuel costs and CO 2 emissions for
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