FERRY NAGISA

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. Hakata

   op. unknown

   → · 2 h in port· medium confidence
2. Hakata

   no cargo change

   → · 3 h in port· draught 4.5→4.5 m
3. Hakata

   no cargo change

   → · 5 h in port· draught 4.5→4.5 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. Hakata· Japan

   10 h
   3 calls · 3 h avg

Based on 3 completed calls observed since — open calls (no departure yet) are excluded. The distribution sharpens as AIS history accrues.