On 22 March your 0519 DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 200°T at an observed altitude (Ho) of 33°05.5'. The chronometer reads 10h 16m 47s, and is 02m 15s slow. What star did you observe?

Correct Answer: Option C — Antares

Convert chronometer time to GMT. Utilize the Nautical Almanac to find GHA Aries and the star's SHA. Compute LHA and Declination. By plotting the intercept or comparing coordinates against the star list, Antares is identified as the body matching the observed altitude and bearing at the specified DR position.