Leia uma explicação para esta série de 30 posts clicando aqui.
"With a sextant, altitudes are measured in the usual manner. If in a small boat or raft, it is a good idea to make a number of observations and average both the altitudes and times, or plot on graph paper the altitudes versus time. The rougher the SEA, the more important this process becomes, which tends to average out errors caused by rough weather observations."
CHAPTER 26 EMERGENCY NAVIGATION
BOWDITCH
THE AMERICAN PRACTICAL NAVIGATOR
CHAPTER 26 EMERGENCY NAVIGATION
BOWDITCH
THE AMERICAN PRACTICAL NAVIGATOR
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