The requested vessel with name LEFTER and MMSI:271043313 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
LEFTERIS L 8694560 237291000 Feb 18, 2018 12:05 UTC

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