Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?

Correct Answer: Option B — 12.4 miles

Navigational triangle computations via Bowditch piloting methods use the run distance at 14 knots over 25 minutes between bearings. Applying trigonometric functions to the relative angles from the trackline calculates the abeam distance as 12.4 miles.