Your vessel is steering 049°T at 15 knots. At 1914 a light bears 078°T, and at 1951 the same light bears 116°T. What will be your distance off abeam?

Correct Answer: Option B — 6.7 miles

Calculate the run distance of 9.25 miles over 37 minutes. The relative bearings are 29 degrees and 67 degrees. To find the distance off when abeam, calculate the distance at the second bearing and apply the sine of the relative angle. The result is 6.7 miles.