At 0100 zone time on 23 September your DR position is LAT 24°25.0'N, LONG 83°00.0'W. You are steering course 315°T. The speed over the ground is 10.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1100 running fix?

Correct Answer: Option C — LAT 25°35.3'N, LONG 84°17.0'W

Advancing morning sun lines over a ten-hour interval from 0100 to 1100 at 10 knots on course 315°T requires precise vector addition, establishing the vessel's true position at LAT 25°35.3'N, LONG 84°17.0'W.