You are steaming on a course of 211°T at 17 knots. At 0417 a light bears 184°T, and at 0428 the same light bears 168°T. What is the distance off the light at 0428?

Correct Answer: Option A — 5.1 miles

This is a running fix using the relative bearing method. Calculate the change in bearing and the run between observations. Using the formula for distance off at the second bearing, the vessel's speed and time interval provide the distance of 5.1 miles, consistent with standard piloting procedures in Bowditch.