The requested vessel with name MANTA RAY and MMSI:238842040 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
MANTA RAY N/A 235037205 Feb 21, 2018 01:42 UTC
MANTA RAY N/A 235089962 Jan 15, 2018 15:59 UTC

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