On 13 November your 1030 ZT DR position is LAT 19°03'S, LONG 6°34'E. You are on course 164°T, speed 12 knots. Determine your 1200 position using the following observations of the Sun.

Correct Answer: Option A — LAT 19°22.3'S, LONG 6°37.8'E

Advancing a celestial line of position using dead reckoning inputs for course and speed over the interval yields the true ship's position. Calculations apply time differences, intercept methods, and latitude/longitude adjustments per standard celestial navigation principles.