On 15 July your vessel is enroute from Portland, OR, to Singapore, Malaysia. You are steering course 243°T and making a speed of 16 knots. Your 1845 zone time DR is LAT 27°42.0' N, LONG 167°02.0' E. You observed 3 celestial bodies. Determine the latitude and longitude of your 1945 running fix.

Correct Answer: Option D — LAT 27°31.1'N, LONG 166°43.0'E

A running fix is established by advancing the earlier lines of position by the distance run between observations (16 knots for 1 hour = 16 miles). By applying the course of 243°T to the 1845 DR, the intersection with the 1945 celestial LOPs results in LAT 27°31.1'N, LONG 166°43.0'E.