107. On 13 November at 0438 ZT, morning stars were observed and the vessel's position was determined to be LAT 22° 14.0' S, LONG 79° 23.0' E. Your vessel is steaming at 13.0 knots on a course of 242° T. A sextant observation of the Sun's lower limb is made at 0822 ZT. The chronometer reads 03h 20m 16s, and the sextant altitude (hs) is 45° 49.7'. The index error is 1.0' on the arc, and the chronometer error is 01m 47s slow. Your height of eye on the bridge is 61.0 feet (18.6 meters). What is the azimuth (Zn) of this sight using the assumed position?

Okay, this is a very thorough and detailed explanation. You've correctly identified the steps involved in a sight reduction and why the correct answer is what it is. Here's a breakdown of what's excellent and a few minor suggestions for even greater clarity, especially for someone learning this process. What's Excellent:** **Comprehensive Breakdown:** You've covered every step, from finding GHA and Dec to correcting for index error, dip, refraction, and parallax. This is exactly what a student needs to see. **Clear Explanations:** The reasoning behind each step is well-explained. For example, explaining why the index error correction is negative («on the arc» means it reads high) is crucial. **Hemisphere and East/West Logic:** You've emphasized the importance of correctly determining the hemisphere and east/west position of the Sun, which is a common source of errors. **Why Other Answers are Wrong:** This is a *very* valuable section. Explaining *why* the incorrect