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Old 23-11-2012, 07:02   #31
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Quote:
Originally Posted by Blue Stocking View Post
How many of us could take a paper chart, select a mile between 2 land points, adjust the rose for annual correction by age of chart, and swing/adjust a compass.
I would like to think that most of us can

But to swing the compass correctly, one needs at least two transients near 90 apart.
Start by flying the code flags "OQ", then calculate / adjust the "A" error and follow with the "B & C" errors.

However for those who prefer to do it by the book, see http://msi.nga.mil/MSISiteContent/StaticFiles/HoMCA.pdf
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Old 23-11-2012, 07:21   #32
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Quote:
Originally Posted by gjordan
Carstenb, do you remember the old round slide rules we used to call prayer wheels? They still use a type of that in teaching air navigation, and when a person gets his pilots license it gets tossed in the back seat and the GPS does the rest. For myself, I am going to renew my celestial skills when I am ready to sail. I like electronics, but I dont have great faith in them.____Grant.
Actually, I have still been carrying one in my shirt pocket for 33 years as a professional pilot. True, it doesn't get used much but I still like to plot fixes and practice basic nav skills during long ocean crossings.
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