The requested vessel with name OLJAREN and MMSI:0 and IMO:5262720 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
OLJAREN 9236315 265724260 GOTHENBURG Feb 17, 2018 21:56 UTC

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