Navigation Problems USCG Question #970 (Set 29)

You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 8.9 miles

Applying standard Bowditch running fix principles, use the vessel's speed and time interval between observations alongside the bearing angles to solve the navigational triangle. The resulting computation yields a precise distance off at the second bearing of 8.9 miles.

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