> One wonders if you could drop a battery operated GPS beacon reporting by satellite What do you mean by GPS beacon? It gets a GPS-position and transmits it...

> One wonders if you could drop a battery operated GPS beacon reporting by satellite What do you mean by GPS beacon? It gets a GPS-position and transmits it... where? Using what carrier? You do have AIS already, and it is absolutely battery-operable, but I’m not sure to what extent the equipment is battery operated in the real world. A typical aid transmitter