The requested vessel with name SYLPH and MMSI:0 and IMO:5534719 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SYLPHE N/A 227111820 Aug 27, 2017 18:52 UTC
SYLPHEED N/A 431005838 Feb 11, 2018 07:04 UTC
SYLPHIDE N/A 503046240 Feb 24, 2018 01:50 UTC
SYLPHIDE I N/A 316006525 Aug 16, 2017 14:42 UTC

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