The requested vessel with name SEYIL and MMSI:271136317 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
SEYIL 9701504 434124400 TURKMENBASHI Oct 10, 2017 17:34 UTC

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