On 14 January your 0550 DR position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star bearing 192°T at an observed altitude (Ho) of 06°15.2'. The chronometer reads 08h 48m 51s, and is 01m 22s slow. What star did you observe?

Correct Answer: Option D — Gacrux

Convert chronometer time to GMT. Extract GHA Aries and SHA from the Nautical Almanac to determine the star's LHA and Declination. Cross-referencing these coordinates with the star list for the given date confirms Gacrux, which corresponds to the observed altitude and bearing at the specified DR position.