Sorry for bringing this one back from the dead
IO540 wrote:
You can always find these stories from somebody. Was it an ancient GPS with an internal aerial, used below deck perhaps?? Or did they enter a user waypoint and got a couple of digits transposed?
The somebody that wrote the article is a vice president of the Royal Institute of Navigation.
The article goes on to point some of the other problems with GPS, including weak signals, interference and jamming. It is interesting to note that the European Maritime Safety Agency is looking at the use of LORAN C for back up to GPS.
GPS is great and should become part of the nav part of the ppl, but you should always be able to tell when it is telling porkies, in other words, be able to gross error check your position using the chart or other nav aids.