You have steamed 1260 miles at 18 knots, and consumed 205 tons of fuel. If you have to steam 1423 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 16 knots?

Correct Answer: Option D — 183 tons

Using Bowditch fuel and speed laws, total consumption scales with distance and the cube of the speed ratio: $F_2 = 205 \times (1423/1260) \times (16/18)^3$. Solving this operational equation results in 183 tons.