On 15 February at 0610 ZT, in DR position LAT 56°53.0'N, LONG 157°02.9'E, you observe Polaris at a sextant altitude (hs) of 56°10.4'. The index error is 2.5' on the arc, and the height of eye is 18 meters. What is the latitude?

Question

On 15 February at 0610 ZT, in DR position LAT 56&deg;53.0'N, LONG 157&deg;02.9'E, you observe Polaris at a sextant altitude (hs) of 56&deg;10.4'. The index error is 2.5' on the arc, and the height of eye is 18 meters. What is the latitude?

Accepted Answer

Option A: 56&deg;41.8'N. Polaris observations utilize the tabulated corrections a0, a1, and a2 from the Nautical Almanac based on Local Hour Angle of Aries. Apply index error and height of eye to hs, then add altitude corrections to the corrected sextant altitude to find LAT 56°41.8'N.

On 15 February at 0610 ZT, in DR position LAT 56&deg;53.0'N, LONG 157&deg;02.9'E, you observe Polaris at a sextant altitude (hs) of 56&deg;10.4'. The index error is 2.5' on the arc, and the height of eye is 18 meters. What is the latitude?

On 15 February at 0610 ZT, in DR position LAT 56°53.0'N, LONG 157°02.9'E, you observe Polaris at a sextant altitude (hs) of 56°10.4'. The index error is 2.5' on the arc, and the height of eye is 18 meters. What is the latitude?