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- Q127 - Navigation Problems: Oceans
212. On 25 June at 0612 zone time, morning stars were observed, and the vessel's position was determined to be LAT 28° 13.0' S, LONG 49° 34.0' E. Your vessel is steaming at 17.0 knots on a course of 066° T. A sextant observation of the Sun's lower limb is made at 1022 zone time. The chronometer reads 07h 19m 17s, and the sextant altitude is 35° 26.3'. The index error is 1.5' on the arc, and the chronometer error is 02m 51s slow. Your height of eye on the bridge is 58.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
The correct azimuth of the Sun sight is 021.5 T. This is determined by advancing the vessel's position, calculating the local hour angle and Sun's declination from the Nautical Almanac, and applying sight reduction techniques, considering the vessel's latitude, declination, and time of observation.
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