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

On 22 July your 1759 DR position is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing 293°T at an observed altitude (Ho) of 17°52.8'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?

A Miaplacidus

B Regulus

C Suhail

D Antares

AI Explanation

The correct answer is B) Regulus. To determine the observed star, we can use the given information to calculate the star's position and compare it to the positions of known stars. The observed altitude (Ho) of 17°52.8' and the observed bearing of 293°T, combined with the vessel's DR position and the chronometer time, allow us to identify the observed star as Regulus. The other options are incorrect because Miaplacidus, Suhail, and Antares do not match the calculated star position based on the provided information.

Question 104Navigation Problems

On 22 July your 1759 DR position is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing 293°T at an observed altitude (Ho) of 17°52.8'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?