The requested vessel with name SERIFOS and MMSI:0 and IMO:5320716 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SERIFOS 9371256 565576000 LABUAN_MLYSIA Jul 17, 2017 02:31 UTC
SERIFOS N/A 227280860 MARINA ALIMOS Apr 24, 2015 07:07 UTC

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