The requested vessel with name AMBITIOUS and MMSI:0 and IMO:5216460 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
AMBITIOUS N/A 250000399 HOWTH Dec 14, 2017 12:13 UTC
AMBITIOUS 9257503 538007609 ASALOYE Nov 26, 2017 19:54 UTC
AMBITIOUS ALICE N/A 235015555 Nov 26, 2017 11:51 UTC
AMBITIOUS B420 N/A 235007359 FISHING GROUNDS Dec 12, 2017 10:27 UTC

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