The requested vessel with name SAM WON and MMSI:0 and IMO:7203778 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SAM WON SHIN N/A 440103690 BUSAN Dec 14, 2017 00:47 UTC

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