Given are the courses and speeds of 4 vessels. The navigator of which vessel would be required to know the actual time of meridian transit in order to take an accurate observation at LAN?

Correct Answer: Option A — C 162°T, Sp 27 knots

A high-speed vessel on a northerly or southerly course (such as 162 degrees T at 27 knots) rapidly changes its terrestrial longitude, causing a significant shift in the time of local apparent noon (LAN), requiring precise transit calculations for sights.