The requested vessel with name BERGUR and MMSI:0 and IMO:6617996 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
BERGUR 9171694 251529000 VEY Dec 14, 2017 02:04 UTC
BERGUR STERKI HU-17 N/A 251146340 Feb 15, 2017 08:12 UTC
BERGUR VIGFUS GK-43 N/A 251014000 Dec 15, 2017 07:46 UTC

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