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Complete Solution for the Celestial Line of Position copy

Complete Solution for the Celestial Line of Position copy -...

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Unformatted text preview: Spring 2009 Navigation 212 Complete Solution for the Celestial Line of Position Required: • In each of the observations tabulated below, obtain data from the 1981 Nautical Almanac, calculate the LHA, and then make the necessary computations in the Sight Reduction tables for Marine Navigation (HO 229) to find computed altitude (hc) and computed True Azimuth (Zn). • Correct the sextant angle (hs) to the observed altitude (ho) and then find the altitude intercept for plotting purposes. Compare the Computed Altitude (hc) to the Observed Altitude (ho) to determine the altitude intercept (a): o if hc > ho then your assumed position is too close to the body’s GP and LOP must be plotted at a distance equal to the intercept’s value on the reciprocal bearing of the azimuth (“Computed greater: Away” - “CGA”) o if ho > hc then your assumed position is too far from the body’s GP and the LOP...
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