You are steaming on a course of 208°T at 21 knots. At 2019 you observe a lighthouse bearing 129°T. At 2030 the lighthouse bears 103°T. What is your distance off at the second bearing?

Correct Answer: Option B — 8.6 miles

Per Bowditch piloting standards, calculate the distance off at the second bearing using the time elapsed between observations, vessel speed, and the relative angles from the heading. Solving the navigation triangle produces a distance off of 8.6 miles.