Your vessel is on a course of 343°T at 14 knots. At 2156 a light bears 320.5°T, and at 2217 the light bears 298°T. At what time and at what distance off will your vessel be when abeam of the light?

Correct Answer: Option B — 2232, 3.4 miles

Standard piloting running fix calculations using a 21-minute time interval between bearings of 320.5 and 298 degrees relative to a 343-degree course yield an abeam time of 2232 and a distance off of 3.4 nautical miles.