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- Q135 - Navigation Problems: Oceans
182. On 17 November in DR position LAT 01°14.4'S, LONG 148°45.5'E, you take an ex-meridian observation of the planet Venus at upper transit. The chronometer time of the sight is 05h 31m 42s, and the chronometer error is 01m 50s fast. The sextant altitude (hs) is 64°41.1'. The index error is 1.8' off the arc, and your height of eye is 50 feet. What is the latitude at meridian transit?
The correct latitude is determined by properly correcting the sextant altitude, applying the ex-meridian correction using the Nautical Almanac, and then using the meridian-altitude latitude formula, resulting in a latitude of 0118.0'S.
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