455. 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?

A navigator must account for the time of meridian transit when a vessel has a significant north-south speed, as this motion can shift the observed maximum altitude away from true meridian passage. Vessel C 162T at 27 knots has the greatest north-south speed, necessitating this correction.