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- Q135 - Navigation Problems: Oceans
241. On 22 June at 0906 EDT (ZD +4), your position is LAT 24° 36' N, LONG 69° 30' W. You are on course 165° pgc at a speed of 14.8 knots. A sextant observation of the Sun's lower limb is made, and the sextant altitude (hs) is 42° 44.0' with an index error of 0.8' off the arc. At this time the chronometer reads 01h 10m 12s, and is 2m 42s slow. If your height of eye is 70 feet, what is the azimuth (Zn) of the sight using the assumed position?
The azimuth of the Sun is calculated using the chronometer-derived GMT, Nautical Almanac data, and an assumed position near the dead reckoning position. Correctly applying these steps yields an azimuth of 080.4.
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