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- Q141 - Navigation Problems: Near Coastal
207. You are steaming on a course of 167° T at 19.5 knots. At 1837 you observe a lighthouse bearing 224° T. At 1904 the lighthouse bears 268° T. What is your distance off at the second bearing?
The distance off at the second bearing is calculated by determining the run between bearings, applying the law of sines to find the slant range to the lighthouse, and then resolving this range perpendicularly to the track.
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