The requested vessel with name KERCH and MMSI:0 and IMO:5185609 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KERCHENSKIY 2 7741017 273373520 KAVKAZ Feb 23, 2018 17:20 UTC
KERCHING OF POOLE N/A 235073573 Apr 10, 2017 14:26 UTC

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