The requested vessel with name SHAHTOOSH and MMSI:503687500 and IMO:0 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SHAHTOOSH N/A 477991258 Feb 13, 2018 00:51 UTC

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