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?

Correct Answer: Option A — 10.4 miles

Utilizing standard USCG Bowditch running fix formulas for bearings taken on a relative heading, compute the distance off at the second bearing using run distance and angle differences. This trigonometric calculation confirms a distance off of 10.4 miles.