On 7 May you observe Polaris for latitude at 0303 ZT. Your DR position is LAT 56°35.4' N, LONG 05°38.9' W. The sextant altitude is 56°11.1'. The height of eye is 36', and the index error is 3.3' off the arc. What is the latitude at the time of the sight?

Question

On 7 May you observe Polaris for latitude at 0303 ZT. Your DR position is LAT 56&deg;35.4' N, LONG 05&deg;38.9' W. The sextant altitude is 56&deg;11.1'. The height of eye is 36', and the index error is 3.3' off the arc. What is the latitude at the time of the sight?

Accepted Answer

Option D: 56&deg;38.7'N. Adjust the sextant altitude for index error, dip, and refraction. Determine the LHA of Aries using the chronometer time and DR longitude. Apply the Polaris correction factors (a0, a1, a2) from the Nautical Almanac to the altitude to calculate the latitude, confirming the correct position of 56°38.7'N.

On 7 May you observe Polaris for latitude at 0303 ZT. Your DR position is LAT 56&deg;35.4' N, LONG 05&deg;38.9' W. The sextant altitude is 56&deg;11.1'. The height of eye is 36', and the index error is 3.3' off the arc. What is the latitude at the time of the sight?

On 7 May you observe Polaris for latitude at 0303 ZT. Your DR position is LAT 56°35.4' N, LONG 05°38.9' W. The sextant altitude is 56°11.1'. The height of eye is 36', and the index error is 3.3' off the arc. What is the latitude at the time of the sight?