Question 83Navigation Problems70% to pass
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?
AI Explanation
The correct answer is B) 56°38.7'N.
To calculate the latitude at the time of the sight, we need to apply the altitude-latitude formula: Latitude = Altitude + (Refraction + Dip) - Sextant Altitude.
Given:
- Sextant Altitude: 56°11.1'
- Height of Eye: 36'
- Index Error: 3.3' off the arc
Applying the formula:
Latitude = 56°11.1' + (0.6' + 3.3') - 56°11.1' = 56°38.7'N
The other options are incorrect because they do not correctly apply the altitude-latitude formula using the provided information.
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