The requested vessel with name BIG JOHN and MMSI:367338920 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
BIG JOHN N/A 338207471 Jan 01, 2018 19:04 UTC
BIG JOHN N/A 367612160 Oct 15, 2017 16:45 UTC
BIG JOHN VII N/A 710015460 OFF SHORE Feb 08, 2018 21:36 UTC
BIG_JOHN N/A 367334620 HOUMA Nov 28, 2017 14:18 UTC

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