The requested vessel with name ISLAND NAVIGATOR and MMSI:0 and IMO:9731626 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
ISLAND NAVIGATOR N/A 316001885 HOWE SOUND Dec 12, 2017 23:43 UTC
ISLAND NAVIGATOR N/A 512001029 Dec 12, 2017 19:29 UTC

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