[C320-list] OT - GPS Chartplotter points kinda wacky

[Brad Kuether]

I have been hearing stories about how the GPS satellites are getting old and some are dropping out of service.  On my latest trip out over last weekend, (which BTW was awesome in a bigger and more stable boat!) we were tracking along doing 6, 7, and almost 8 knots in 13 to 20 knts apparent.  We were out for most of the day so the GPS picked up a LOT of points.  When I pulled up the data on the charting software at home, I had a LOT of "backwards moments", points that were directly behind me in sequence.  

I can only imagine this would be caused by either:

A - The military is randomly turning selective availability on and off.
B - Something is up with our satellite network and maybe what they are saying is true.

Anyone else seeing this, on the Chesapeake or elsewhere?

-Brad, Mary, Monica, and Jarod
"Independence"
2004 Catalina 320 Hull 1006
Middle River, MD