On 6 April your 0300 DR position is LAT 27°42' S, LONG 128°58' W. You are on course 097°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix.

Correct Answer: Option A — LAT 27°44.7'S, LONG 127°47.5'W

Advancing a celestial line of position using dead reckoning accounts for course and speed over the three-hour time interval between sights. Applying the run vector (097°T at 18 knots for 3 hours = 54 miles) to the intercept lines yields LAT 27°44.7'S, LONG 127°47.5'W.