The requested vessel with name DOKU VII and MMSI:271010139 and IMO:0 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
DOKU-VIII N/A 271010138 Dec 29, 2017 05:03 UTC

Also, you may try to find the vessel in our comprehensive Vessels Database or track this ship on the map.