On 30 July your 1030 ZT DR position is LAT 19°02'N, LONG 138°12'W. You are on course 309°T, speed 24 knots. Determine your 1200 position using the following observations of the Sun.

Correct Answer: Option C — LAT 19°29.7'N, LONG 138°42.0'W

Advancing sun lines across a 90-minute run at 24 knots on course 309°T corrects the morning sights to local apparent noon. Applying the run vector and solving the resulting intercept equations establishes the fix at LAT 19°29.7'N, LONG 138°42.0'W.