Question for the Atlantic Oceanic controllers.
In Oz over water we have CPDLC (Controller Pilot Data Link communication) and ADS (Automatic Dependent Surveillance) which both use satelite or VHF (when in range) links to give us on our display a position of the aircraft (actually more accurate than radar) and the capability to communicate to the pilot by text message.
Do you have this capability at Shannon, Gander, Santa Maria, or New York? I know we had the New York oceanic controllers looking at our gear 2 years ago but went with an american version of our eurocat 2000.
By the way, I understand that modern aircraft use GPS nav rather than INS or IRS these days. I thought it was the older models that still had INS or IRS.