Re: The danger of GPS as the sole means of navigation.
The thing I don't understand about the Guardian grounding is how a warship with several officers (I assume) in the wheelhouse, did none of them look at the radar or the depth sounder and wonder why things didn't add up?
It's pretty basic boating to reduce speed, or even stop, if there is any confusion about where you are or if one reading disagrees with another.
SV Laurie Anne
1988 Brewer 40 Pilothouse