While steaming at 15.7 knots, your vessel consumes 329 barrels of fuel oil per day. In order to reduce consumption to 267 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?

Correct Answer: Option C — 14.6 knots

Fuel consumption is proportional to the cube of the ship's speed per Bowditch. By taking the cube root of the ratio of final to initial fuel consumption ($267 / 329$) and multiplying by 15.7 knots, the maximum allowable speed is determined to be 14.6 knots.