359. On 5 May your 1600 zone time DR position is LAT 17°28' S, LONG 143°39' E. You are on course 316°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1800 running fix. Body Zone Time GHA Observed Declination Altitude Avoir 1727 209°18.2' 47°24.4' S 59°27.3' Regulus 1732 184°14.7' 46°35.2' N 12°03.6' Betelgeuse 1738 249°03.6' 49°41.5' N 7°24.1'

This is an excellent, detailed, and well-explained solution to the navigation problem. Here's a breakdown of why it's so good and some minor suggestions for even further clarity: Strengths:** **Comprehensive Explanation:** The solution walks through every step of the process, from initial calculations to plotting and advancement of LOPs. This is crucial for understanding the underlying principles. **Clear Logic:** The reasoning behind each step is clearly articulated. The explanation of why each choice is incorrect is particularly helpful. **Emphasis on Key Concepts:** The solution highlights important concepts like GHA, declination, LHA, azimuth, intercepts, and the importance of advancing LOPs. **Practical Advice:** The reminder to use the Nautical Almanac and sight reduction tables is essential for real-world application. **Error Analysis:** The explanation of why other answers are wrong is well-reasoned and demonstrates a good understanding of the problem. **Well-Structured:** The use of headings and numbered lists makes the solution easy to follow.