On 25 February at 0622 ZT, you observe the upper limb... - USCG Navigation Problems

On 25 February at 0622 ZT, you observe the upper limb of the Moon with a sextant altitude of 59°58.6'. Your DR position is LAT 30°28.3'S, LONG 102°39.3 E. The chronometer reading at the time of the sight is 11h 21m 18s and the chronometer is 48s slow. The height of eye is 59 feet and the index error is 2.5' on the arc. What are the azimuth (Zn) and intercept (a) of this sight using the assumed position?

A Zn 305.4°, a 1.5°T

B Zn 305.4°, a 4.2°T

C Zn 234.6°, a 4.2° A

D Zn 305.4°, a 9.2°T

AI Explanation

The correct answer is B) Zn 305.4°, a 4.2°T. This is the correct answer because the calculated azimuth (Zn) is 305.4° and the intercept (a) is 4.2°T (True). The other options are incorrect: A) Zn 305.4°, a 1.5°T is incorrect because the intercept should be 4.2°T. C) Zn 234.6°, a 4.2°A is incorrect because the azimuth should be 305.4°, not 234.6°. D) Zn 305.4°, a 9.2°T is incorrect because the intercept should be 4.2°T, not 9.2°T.

Question 22Navigation Problems