On 22 June your 0424 DR position is LAT 26°18.5' N,... - USCG Navigation Problems

On 22 June your 0424 DR position is LAT 26°18.5' N, LONG 124°18.2' W. You observe an unidentified star bearing 154°T at an observed altitude (Ho) of 15°01.2'. The chronometer reads 12h 23m 24s, and is 01m 32s slow. What star did you observe?

A Alioth

B Schedar

C Ankaa

D Peacock

AI Explanation

The correct answer is C) Ankaa. To determine the observed star, we need to use the information provided in the question and perform celestial navigation calculations. Given the DR position, observed altitude, and chronometer time, we can look up the star in nautical almanacs that matches these observations. Using the provided information, the star observed is Ankaa. This is because Ankaa is the only star among the answer choices that has an acceptable match with the given latitude, longitude, observed altitude, and chronometer time. The other options (Alioth, Schedar, and Peacock) do not align with the provided celestial observations.

Question 49Navigation Problems

On 22 June your 0424 DR position is LAT 26°18.5' N, LONG 124°18.2' W. You observe an unidentified star bearing 154°T at an observed altitude (Ho) of 15°01.2'. The chronometer reads 12h 23m 24s, and is 01m 32s slow. What star did you observe?