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- Q142 - Navigation Problems: Oceans
450. You are steaming on course 168°T at a speed of 18 knots. At 1426 you sight a buoy bearing 144°T. At 1435 you sight the same buoy bearing 116°T. What is your distance off at the second bearing and predicted distance when abeam?
The distance off at the second bearing is 2.3 nautical miles, and the predicted distance when abeam is 1.8 nautical miles, calculated using the Law of Sines and trigonometric relationships based on the ship's course, bearings, and distance run.
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