ISLAND PRINCESS

Arrivals, time in port and the load/discharge inferred from the draught change — detected from AIS track history. An open call means the vessel is still in port (no departure observed yet).

1. Ketchikan

   no cargo change

   → · 9 h in port· draught 8.3→8.3 m
2. Port of Vancouver

   no cargo change

   → · 9 h in port· draught 8.3→8.3 m
3. Juneau

   no cargo change

   → · 3 h in port· draught 8.3→8.3 m
4. Ketchikan

   no cargo change

   → · 6 h in port· draught 8.3→8.3 m
5. Port of Vancouver

   no cargo change

   → · 9 h in port· draught 8.3→8.3 m
6. Ketchikan

   no cargo change

   → · 10 h in port· draught 8.3→8.3 m
7. Port of Vancouver

   no cargo change

   → · 9 h in port· draught 8.3→8.3 m

Method: each call is a run of fixes inside a port’s geofence confirmed by a stop (or an AIS gap); load/discharge is the sign of the draught delta over the call. Indicative — arrivals before our AIS history began read from the first observation.

Time-in-port summed by port from the AIS-detected port-call history — the ports this vessel has spent the most time at, longest first.

1. Port of Vancouver· Canada

   27 h
   3 calls · 9 h avg
2. Ketchikan· USA

   25 h
   3 calls · 8 h avg
3. Juneau· USA

   3 h
   1 call · 3 h avg

Based on 7 completed calls observed since — open calls (no departure yet) are excluded. The distribution sharpens as AIS history accrues.