The requested vessel with name KATMANDU and MMSI:503682700 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
KATMANDU N/A 247049950 Aug 23, 2017 09:39 UTC

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