Thread: O/T: knots
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Old February 24th 16, 05:40 PM posted to rec.bicycles.misc
W. Wesley Groleau
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Posts: 372
Default O/T: knots

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
SA blurring).

Wes Groleau

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