Question 1672Navigation General

The correct answer is B) C 166°T, Sp 24 knots. The navigator of the vessel traveling at 166°T and 24 knots would be required to know the actual time of meridian transit in order to take an accurate observation at Local Apparent Noon (LAN). This is because vessels traveling at high speeds over large distances need to account for changes in their longitude, which affects the timing of LAN. Knowing the precise time of meridian transit allows the navigator to accurately determine the vessel's position and take a reliable celestial observation at LAN. The other options, while valid vessel courses and speeds, do not require the same level of precision in determining the time of meridian transit for an LAN observation, as they are traveling at slower speeds or different headings that do not significantly impact the timing of LAN.