The requested vessel with name WHITBY and MMSI:0 and IMO:5391727 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
WHITBY CREST N/A 235096797 Nov 25, 2017 17:02 UTC

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