The requested vessel with name R AND R and MMSI:503457700 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
R AND R N/A 338243785 Sep 07, 2017 13:32 UTC

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