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Two Bearing Fix
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Hints
Follow these guidelines to achieve the accuracy contained
in the School solution:
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Print the chart section and the compass rose and
tape them together with the lines of latitude and longitude
accurately aligned to allow drawing True lines on the chart.
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Calculate the change in Variation from the date on the
compass rose to the date of the question by using the annual change
in Variation given on the compass rose. (Note that the Magnetic
Variation of this compass rose was 15º00'W
in 1985 and was increasing by 3' per year.)
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Round off the resulting Magnetic Variation to the nearest whole degree
using conventional rounding procedures. (Round up for a half degree
or more, and round down if less than half a degree)
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Using TVMDC procedures, convert the degrees psc of
the two bearings to Magnetic and then to True by
applying Deviation and Variation.
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Plot the two bearing LOPs on the chart provided using degrees True
and determine your position based on the intersection of these lines.
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Read your Latitude-Longitude position to the nearest tenth of a degree.
Answer
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