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- Q127 - Navigation Problems: Oceans
102. On 16 January at 1804 zone time, you take a sextant observation of Polaris. Your vessel's DR position is LAT 36°12' N, LONG 124°36' W, and your sextant reads (hs) 37°16.4'. Your chronometer reads 02h 02m 12s, and is 01m 36s slow. Your height of eye is 60 feet, and the index error is 1.5' on the arc. From your observation of Polaris, what is the latitude of your vessel?
The latitude was determined by correcting the sextant altitude for index error and dip/refraction, then applying a Polaris correction from the Nautical Almanac based on Greenwich time, LHA Aries, and an assumed latitude.
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