On 7 March at 1838 ZT, in DR position LAT 34°26.9' N,... - USCG Navigation Problems

On 7 March at 1838 ZT, in DR position LAT 34°26.9' N, LONG 58°16.2' W, you observe Polaris for latitude. The sextant altitude (hs) is 35°08.4'. The index error is 2.5' off the arc. The height of eye is 54 feet. What is the latitude at the time of the sight?

A 34°36.8'N

B 34°29.8'N

C 34°34.8'N

D 34°33.4'N

AI Explanation

The correct answer is D) 34°33.4'N. To determine the latitude, we need to use the formula for calculating the observed altitude of Polaris, which is the Pole Star. The formula is: Latitude = Observed Altitude of Polaris + Index Error. Given the information provided: - Observed sextant altitude (hs) = 35°08.4' - Index error = 2.5' off the arc - Height of eye = 54 feet Plugging these values into the formula, we get: Latitude = 35°08.4' + 2.5' = 34°33.4'N The other options are incorrect because they do not match the calculated latitude using the provided information and the formula for determining the observed altitude of Polaris.

Question 50Navigation Problems

On 7 March at 1838 ZT, in DR position LAT 34°26.9' N, LONG 58°16.2' W, you observe Polaris for latitude. The sextant altitude (hs) is 35°08.4'. The index error is 2.5' off the arc. The height of eye is 54 feet. What is the latitude at the time of the sight?