On 16 November your 0800 zone time DR position is LAT 25°11.0'N, LONG 117°41.0'W. Your vessel is on course 252°T at a speed of 14.5 knots. What is the zone time of local apparent noon (LAN)?

Correct Answer: Option A — 1139

The DR position is 117°41.0'W, which is 2°19.0' east of the 120°W zone meridian. Converting this to time and accounting for the vessel's speed of 14.5 knots on course 252°T, the vessel reaches the meridian at 1139. This calculation follows standard celestial navigation time-keeping principles found in Bowditch.