While steaming at 14.5 knots, your vessel consumes 242 barrels of fuel oil per day. In order to reduce consumption to 152 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?

Correct Answer: Option D — 12.4 knots

Apply the fuel consumption cubic law: (V2/V1)^3 = (C2/C1). With V1 = 14.5 knots, C1 = 242, and C2 = 152, calculate the cube root of the consumption ratio and multiply by the initial speed. This calculation results in a maximum speed of 12.4 knots for the reduced fuel consumption.