The requested vessel with name IONIAN SEA and MMSI:0 and IMO:5119648 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
IONIAN SEA N/A 503048650 Jan 03, 2018 02:14 UTC
IONIAN SEA FOS 8110796 249597000 PORT LOUIS_MAURITIUP Sep 10, 2017 12:51 UTC

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