"Charlie Morgan" wrote in message
You could just as easily break your compass, lose your paper charts
overboard or a variety of other mishaps that are at LEAST as likely to
happen as your fantasy about the satellites.

Ah, you saw Captain Ron, didn't ya.

GPS satellites being shot down seems very unlikely compared to the
frequency of mishaps that actually DO happen.

Far less likely than the other things you mentioned, obviously. Not to
mention the fact that virtually every country on Earth uses *our* GPS train
of satellites.

What if Magnetic North suddenly moves?

It moves every minute of the day, fortunately not very far.

Max