The requested vessel with name NONNI and MMSI:518100051 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
NONNI GK-129 N/A 251487440 Jun 19, 2017 15:35 UTC
NONNI HEBBA N/A 251844340 Feb 20, 2017 21:06 UTC
NONNI PURK N/A 251990821 May 14, 2017 21:52 UTC

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