The requested vessel with name CHOPIN and MMSI:0 and IMO:8513728 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
CHOPIN N/A 367595260 ST AUGUSTINE Oct 21, 2017 18:24 UTC
CHOPIN 9449120 212193000 LUANDA ANGOLA Oct 16, 2017 08:36 UTC

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