On 14 October your 0800 ZT DR position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 1156
The DR position is 161°17.0'E, which is 1°17.0' west of the 165°E zone meridian. Converting this to time and accounting for the vessel's speed of 17.5 knots on course 116°T, the vessel reaches the meridian at 1156. This follows standard celestial navigation time-keeping procedures for determining LAN.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.