You are running coastwise in hazy weather; the visibility improves just before you pass a lighthouse abeam. Your speed is 15 knots, and the lighthouse was abeam at 1015. At 1037 the lighthouse is 4 points abaft the beam. What is your distance off at the second bearing?

Question

Accepted Answer

Option A: 7.8 miles. Per Bowditch piloting rules, when an object is observed abeam and then four points abaft the beam, the run distance equals the distance off at the second bearing, resulting in 7.8 miles.