539. 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?

Fuel consumption is calculated by first determining the fuel rate at the new speed using the cube of the speed relationship, then multiplying that rate by the time required to steam the remaining distance at the new speed, resulting in 183 tons.