You are steering 173°T, and a light is picked up dead ahead at a distance of 13.9 miles at 0054. You change course to pass the light 4.5 miles off abeam to port. If you are making 21 knots, what is your ETA at the position 4.5 miles off the light?

Correct Answer: Option A — 0131

Applying standard Bowditch navigational formulas, calculate the true distance along the new course line using the initial 13.9-mile sight and 4.5-mile offset. Dividing this path by 21 knots determines the elapsed time, confirming an ETA of 0131.