On 12-20-2015 05:50, John B. wrote:
The U.S. navel Academy stopped teaching celestial navigation nearly 20
years ago stating that while celestial was accurate to a 3 mile radius
that GPS was accurate to a 60 ft. radius.
GPS is accurate to ten meters (better with recent extensions) if the
signals are not blocked. But when I left the Navy, we were still using
LORAN, sightings, and dead reckoning; though GPS was available (without