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An estimate can be simple, for example a load and a discharge port with a single cargo, or consist of a combination of a few or multiple port calls, routing points and a single or multiple cargo/es (Multiple Parcels). The Ports (or Port Rotation) field lists at any time the full voyage route (or voyage port rotation) irrespective of, or anything related to, cargo, i.e. displays at all times all port calls and routing points (if any). A port rotation can consist of an unlimited number of load, discharge and/or extra port calls, routing points and canals. Special routing point codes can also be added manually to avoid high risk piracy areas.
There are five six port call/routing point options when building a port rotation:
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