The requested vessel with name SOUTHERN TRADER and MMSI:0 and IMO:5013519 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SOUTHERN TRADER 9167459 564599000 AUCKLAND Feb 09, 2018 11:19 UTC

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