On 26 July your 1030 ZT DR position is LAT 18°25'N, LONG 51°15'W. You are on course 231°T, speed 15 knots. Determine your 1200 position using the following observations of the Sun.

Correct Answer: Option A — LAT 18°07.2'N, LONG 51°30.4'W

Applying a 90-minute run from 1030 to 1200 ZT on course 231°T at 15 knots to morning sun observations establishes the vessel's advanced position. Solving the resulting intercept triangles via standard Bowditch procedures confirms the fix at LAT 18°07.2'N, LONG 51°30.4'W.