On 20 November your 1030 ZT DR position is LAT 27°16.0' N, LONG 157°18.6' E. You are on course 060°T at a speed of 20 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1200 running fix.

Correct Answer: Option B — LAT 27°29.7'N, LONG 157°43.0'E

Updating morning celestial lines across a 90-minute run from 1030 to 1200 ZT at 20 knots on course 060°T accounts for vessel displacement. The intersection of the advanced intercept lines establishes the definitive position of LAT 27°29.7'N, LONG 157°43.0'E.