The requested vessel with name SIGYN and MMSI:0 and IMO:8640325 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SIGYN 9114361 219679000 ESBJERG Feb 21, 2018 21:48 UTC
SIGYN N/A 257271500 Sep 25, 2017 13:36 UTC
SIGYN 8025941 265043000 May 02, 2017 08:15 UTC

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