You are steering 107°T, and a light is picked up dead ahead at a distance of 11 miles at 0847. You change course to leave the light 3 miles off to starboard. If you are making 15.5 knots, what is your ETA at the position 3 miles off the light?

Correct Answer: Option C — 0928

Using Bowditch principles of right-triangle calculations for course changes, the run distance is the hypotenuse of the 11-mile initial range and 3-mile offset. Dividing by 15.5 knots produces the steaming duration, yielding an ETA of 0928.