The requested vessel with name DIAOTAI9998 and MMSI:409567730 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
DIAOTAI168 N/A 413803112 IO:# Feb 21, 2018 06:28 UTC
DIAOTAI1999 N/A 413823148 *** Feb 21, 2018 14:00 UTC
DIAOTAI2626 N/A 413768494 Feb 21, 2018 09:41 UTC

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