On 12 February your 0900 zone time DR position is LAT 16°43.0'N, LONG 51°42.0'W. Your vessel is on course 093°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?

Question

On 12 February your 0900 zone time DR position is LAT 16&deg;43.0'N, LONG 51&deg;42.0'W. Your vessel is on course 093&deg;T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?

Accepted Answer

Option A: 1237. Per Bowditch piloting principles, determine vessel longitude change up to LAN. Calculate vessel's DR position at estimated noon by accounting for course and speed, then apply the equation of time and longitude correction to determine the zone time of LAN as 1237.

On 12 February your 0900 zone time DR position is LAT 16&deg;43.0'N, LONG 51&deg;42.0'W. Your vessel is on course 093&deg;T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?

On 12 February your 0900 zone time DR position is LAT 16°43.0'N, LONG 51°42.0'W. Your vessel is on course 093°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?