You have steamed 1175 miles at 19 knots, and consumed 257 tons of fuel. If you have to steam 1341 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 18 knots?

Correct Answer: Option A — 263 tons

In accordance with Bowditch vessel performance formulas, adjust fuel consumption for both distance variation and speed cubed relationship: $F_2 = 257 \times (1341/1175) \times (18/19)^3$. This calculation gives 263 tons consumed.