Oogle, yep, GNSS RNAV approaches. Anything to complicate and change rather than stick by explanative nomenclature. They are a GPS approach that is non-precision, so what was wrong with "GPS NPA"?
Milt: the approaches are not to a specific point on the runway. They are the same as a VOR/DME, or NDB/DME in that they are approaches to a missed approach point that is determined by both azimuth and distance. There is no real difference because it is GPS. As such, they are promulgated in the same way any other approach waypoint is, on the instrument approach chart.
Crab: I dont think anyone is saying it is a standalone 100% reliable capability. Neither is Loran. Or VOR, etc. Each system should be complimented by a backup of some sort, and in the Coast Guard environment that has no ILS and VOR handy as a back up, we are back to Loran. I bet the Coast Guard are no getting rid of the GPS units in their aircraft.