OPTIMA

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. Djen-Djen

   no cargo change

   → · 34 h in port· draught 4.6→4.6 m
2. Guifões

   no cargo change

   → · 2.5 days in port· draught 8.5→8.5 m
3. Liepaja

   no cargo change

   → · 8 h in port· draught 4.9→4.9 m
4. Botlek

   Loaded

   → · 19 h in port· draught 4.9→8.6 m
5. Nordenham

   Discharged

   → · 33 h in port· draught 8.6→4.9 m
6. Eikefet

   Loaded

   → · 21 h in port· draught 4.5→8.4 m
7. Uddevalla

   op. unknown

   In port since

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. Guifões· Portugal

   2.5 days
   1 call · 2.5 days avg
2. Djen-Djen· Algeria

   34 h
   1 call · 34 h avg
3. Nordenham· Germany

   33 h
   1 call · 33 h avg 1 discharge
4. Eikefet· Norway

   21 h
   1 call · 21 h avg 1 load
5. Botlek· Netherlands

   19 h
   1 call · 19 h avg 1 load
6. Liepaja· Latvia

   8 h
   1 call · 8 h avg

Based on 6 completed calls observed since — open calls (no departure yet) are excluded. The distribution sharpens as AIS history accrues.