Your vessel is steering 218°T at 19 knots. At 2223 a light bears 261°T, and at 2234 the same light bears 289°T. What will be your distance off abeam?

Correct Answer: Option A — 4.9 miles

The run distance is 3.48 miles over 11 minutes. Relative bearings are 43 degrees and 71 degrees. Calculating the distance off at the second bearing and projecting to the beam position using the sine of the relative angle results in 4.9 miles, following established Bowditch navigation principles.