On 22 July your 1759 DR position is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing 100°T at an observed altitude (Ho) of 61°48.2'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?

Correct Answer: Option A — Antares

Calculate the star's GHA and Declination for the corrected GMT. Using the DR position, determine the Hc and Zn. The observed altitude of 61°48.2' and bearing of 100°T correspond to the calculated values for Antares, confirming its identity through standard celestial navigation reduction methods found in Bowditch.