As someone who experienced plenty of moments of shear terror of "where the F*ck am I" in a
Maine fog before
GPS I have no interest in going back to just a
compass, watch and DR track.
Most
GPS glitches/jamming are very local and only for a few minutes. My
boat doesn't go fast enough to get in trouble in that length of time (pilots potentially have a bigger problem)
And if it was a war? What idiot wants to sail their pleasure
boat around in the middle of a war zone? I'd
head for the nearest shore and find a buoy. No GPS needed. I'd also
radio the CG for instructions because I don't want to be an "unidentified boat" when people with big
guns are looking for the enemy.