SPUHELS

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. Port of Vancouver

   no cargo change

   → · 6 h in port· draught 1.5→1.5 m
2. Port of Vancouver

   no cargo change

   → · 5 h in port· draught 1.5→1.5 m
3. Port of Vancouver

   no cargo change

   → · 5 h in port· draught 1.5→1.5 m
4. Port of Vancouver

   no cargo change

   → · 4 h in port· draught 1.5→1.5 m
5. Port of Vancouver

   no cargo change

   → · 3 h in port· draught 1.5→1.5 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

   22 h
   5 calls · 4 h avg

Based on 5 completed calls observed since — open calls (no departure yet) are excluded. The distribution sharpens as AIS history accrues.