Wotname - I am suprised to find that you are still here and not locked up after revealing the highly secret Australian URS system.
At least you didn't spill the beans on the AIS
(that is the Australian Interception System) which now covertly picks up VHF
traffic all around the world and ducts it into the URS. Was very clever of the Australians, especially the tricking of the IMO into mandating that many vessels have to carry AIS
under the cover of being an Automatic Identification System without them realising the hidden Australian functionality in it.