You are steaming on a course of 133°T at 16 knots. At 2216 you observe a lighthouse bearing 086°T. At 2223 the lighthouse bears 054°T. What is your distance off at the second bearing?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 2.6 miles
Per Bowditch piloting and running fix techniques, compute the distance off at the second bearing by analyzing the run distance over the specified time interval and the observed relative angles. Trigonometric evaluation confirms a distance off of 2.6 miles.
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