The requested vessel with name SEEFALKE and MMSI:0 and IMO:5317288 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SEEFALKE 9421233 218692000 CUXHAVEN Feb 24, 2018 12:53 UTC
SEEFALKE N/A 211232960 NORDDEICH Feb 24, 2018 06:02 UTC

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