322. You have steamed 540 miles at 22 knots and burning 618 barrels of fuel per day. You must decrease your consumption to 372 barrels per day with 299 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?

To reduce fuel consumption from 618 to 372 barrels per day, given a standard fuel-speed relationship where consumption varies with the cube of speed, the required speed is approximately 18.6 knots. The provided answer choices contain an error, as only a speed of approximately 18.6 knots achieves the desired fuel reduction; 19.1 knots is the closest option, while 22.9 knots would increase fuel consumption.