Your vessel consumes 178 barrels of fuel per day at a speed of 13.5 knots. What will be the fuel consumption of your vessel at 15.0 knots?

Correct Answer: Option D — 244 bbls

In accordance with standard marine engineering principles and Bowditch formulas, fuel consumption scales by the speed ratio cubed: 178 × (15.0 / 13.5)³ equals 244 barrels per day.