On 22 February your 1857 DR position is LAT 23°46.0'S,... - USCG Navigation Problems

On 22 February your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?

A Miaplacidus

B Avior

C Adhara

D Suhail

AI Explanation

The correct answer is C) Adhara. To determine the observed star, we can use the information provided about the position, time, and observed altitude to look up the corresponding star in nautical almanacs or reference tables. Based on the given latitude, longitude, and observed altitude, the star Adhara matches the criteria. The other answer choices are incorrect because Miaplacidus, Avior, and Suhail do not have the observed altitude and celestial position that match the information provided in the question.

Question 43Navigation Problems

On 22 February your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?