On 17 March your 0800 zone time DR position is LAT 21°27.0'N, LONG 65°25.0'W. Your vessel is on course 105°T at a speed of 17.5 knots. What is the zone time of local apparent noon (LAN)?

Correct Answer: Option C — 1225

LAN occurs when the Sun is on the observer's meridian. Calculate the longitude difference between the DR position and the zone meridian. Account for the vessel's change in longitude due to speed and course over the elapsed time until noon. The resulting calculation confirms 1225 as the LAN time.