The requested vessel with name BIRGER and MMSI:0 and IMO:5052084 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
BIRGER JARL 5044893 265878000 STOCKHOLM Feb 24, 2018 04:05 UTC
BIRGERSON 9020314 259102000 Feb 20, 2018 19:48 UTC

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