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- Q142 - Navigation Problems: Oceans
149. On 21 November at 0430 ZT, morning stars were observed, and the vessel's position was LAT 22° 14.0' S, LONG 79° 23.0' E. Your vessel is steaming at 14.5 knots on a course of 246° T. A sextant observation of the Sun's lower limb is made at 0816 ZT. The chronometer reads 03h 14m 16s, and the sextant altitude (hs) is 44° 29.2'. The index error is 1.0' on the arc, and the chronometer error is 01m 47s slow. Your height of eye is 61.0 feet (18.6 meters). What is the azimuth (Zn) and intercept (a) of this sight using the assumed position method?
A sextant observation of the Sun at 0816 ZT, with chronometer and index error corrections, yields a computed altitude and azimuth. The intercept is 6.6' Toward the Sun's geographical position, with an azimuth of 095.6.
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