You are steering 202°T, and a light is picked up dead ahead at a distance of 14.6 miles at 2234. You change course to pass the light 5 miles off abeam to starboard. If you are making 21 knots, what is your ETA at the position 5 miles off the light?

Correct Answer: Option A — 2313

Calculate the distance to the abeam point using the right triangle formed by the initial distance (14.6 nm) and the passing distance (5 nm). The distance to run is 13.7 nm. At 21 knots, the transit time is 39 minutes, placing the ETA at 2313.