On 22 February your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 126°T at an observed altitude (Ho) of 40°21.5'. The chronometer reads 01h 00m 35s and is 03m 25s fast. What star did you observe?

Correct Answer: Option C — Suhail

Convert chronometer time to GMT. Extract GHA Aries and SHA from the Nautical Almanac to derive the star's LHA and Declination. Comparing these calculated coordinates against the star list for 22 February confirms Suhail, which matches the observed altitude and bearing at the vessel's DR position.