You are steering 031°T, and a light is picked up dead ahead at a distance of 12.7 miles at 0017. You change course to pass the light 3.5 miles off abeam to starboard. If you are making 11 knots, what is your ETA at the position 3.5 miles off the light?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 0124
Per Bowditch piloting instructions, determine the track distance using the initial 12.7-mile range and 3.5-mile abeam clearance as right-triangle components. The resulting hypotenuse divided by 11 knots establishes the exact steaming time, yielding an ETA of 0124.
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