Your vessel is on a course of 255°T, at 14 knots. At 2116 a lighthouse is sighted dead ahead at a distance of 11 miles. You change course at this time to pass the lighthouse 3 miles abeam to port. What will be your ETA at this position off the lighthouse?

Correct Answer: Option A — 2201

Applying Bowditch piloting geometry, the distance to the abeam position is the hypotenuse of a right triangle with sides equal to the initial sight distance (11 miles) and the desired offset (3 miles). Dividing by 14 knots yields an ETA of 2201.