On 22 July your 1759 ZT DR position is LAT 24°50.2' S,... - USCG Navigation Problems

On 22 July your 1759 ZT DR position is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing 231°T, at an observed altitude (Ho) of 26°10.0'. The chronometer reads 06h 01m 31s and is 02m 15s fast. What star did you observe?

A Capella

B Acamar

C Suhail

D Miaplacidus

AI Explanation

The correct answer is C) Suhail. To determine the star observed, we need to use the information provided about the observer's position, the observed altitude, and the chronometer time to calculate the star's azimuth and compare it to the bearing provided. Using nautical almanac data and celestial navigation principles, the calculated azimuth for the observed star matches the bearing of 231°T, which corresponds to the star Suhail. The other options, Capella, Acamar, and Miaplacidus, do not have an azimuth that aligns with the given bearing of 231°T based on the provided location and time information.

Question 99Navigation Problems

On 22 July your 1759 ZT DR position is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing 231°T, at an observed altitude (Ho) of 26°10.0'. The chronometer reads 06h 01m 31s and is 02m 15s fast. What star did you observe?