On 23 June your 0900 zone time DR position is LAT 21°26.0'N, LONG 137°46.0'W. Your vessel is on course 059°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?

Question

On 23 June your 0900 zone time DR position is LAT 21&deg;26.0'N, LONG 137&deg;46.0'W. Your vessel is on course 059&deg;T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?

Accepted Answer

Option C: 1210. Celestial navigation principles from Bowditch dictate that LAN depends on Greenwich Mean Time of local noon, adjusted for vessel longitude and the equation of time for the specific date. Account for vessel run between initial DR time and LAN for precise computation.

On 23 June your 0900 zone time DR position is LAT 21&deg;26.0'N, LONG 137&deg;46.0'W. Your vessel is on course 059&deg;T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?

On 23 June your 0900 zone time DR position is LAT 21°26.0'N, LONG 137°46.0'W. Your vessel is on course 059°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?