On 22 March your 0519 ZT DR position is LAT 27°20.6' N, LONG 69°25.6' W. You observe an unidentified star bearing 094°T, at an observed altitude (Ho) of 30°15.0'. The chronometer reads 10h 16m 47s and is 02m 15s slow. What star did you observe?

Correct Answer: Option A — Enif

Convert chronometer time to GMT and determine the GHA of Aries. Calculate the LHA of the star using the DR longitude. By comparing the resulting declination and SHA against the Nautical Almanac for 22 March, Enif is identified as the star matching the observed altitude and bearing.