You are steering 257°T, and a light is picked up dead ahead at a distance of 13.3 miles at 2016. You change course to pass the light 4 miles off abeam to starboard. If you are making 18.5 knots, what is your ETA at the position 4 miles off the light?

Correct Answer: Option C — 2057

Per standard Bowditch dead reckoning and piloting methods, compute the hypotenuse of the triangle formed by the initial distance and the desired abeam clearance. Divide this distance by the vessel speed of 18.5 knots to find travel time, resulting in an accurate ETA of 2057.