Question 39Navigation Problems70% to pass
On 12 February your 0930 zone time DR position is LAT 25°20.0'N, LONG 30°40.0'W. Your vessel is on course 135°T at a speed of 11.2 knots. What is the zone time of local apparent noon (LAN)?
AI Explanation
The correct answer is C) 1215.
To determine the zone time of local apparent noon (LAN), we need to calculate the local meridian passage (LMP) and then convert it to the zone time.
Given:
- DR position at 0930 zone time: LAT 25°20.0'N, LONG 30°40.0'W
- Course: 135°T
- Speed: 11.2 knots
The longitude of the local meridian is 30°40.0'W. The time of LMP can be calculated using the formula:
LMP = 1200 + (Longitude in degrees / 15)
LMP = 1200 + (30°40.0'W / 15)
LMP = 1215
Therefore, the zone time of local apparent noon (LAN) is 1215.
The other answer choices are incorrect because:
A) 1224 is not the correct zone time of LAN.
B) 1220 is not the correct zone time of LAN.
D) 1210 is not the correct zone time of LAN.
Related Questions
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