Navigation Problems USCG Question #1204 (Set 36)

On 20 June your 0800 zone time DR position is LAT 21°02.0'N, LONG 152°50.0'E. Your vessel is on course 265°T at a speed of 15.0 knots. What is the zone time of local apparent noon (LAN)?

Official USCG Answer & Rule Citation

Correct Answer: Option B — 1154

LAN occurs when the Sun crosses the observer's meridian. Calculate the time difference between the reference meridian and the vessel's longitude (152°50.0'E). Since the vessel is east of the zone meridian, the Sun reaches the meridian earlier than 1200, resulting in a zone time of 1154.

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