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- Q127 - Navigation Problems: Oceans
438. While steaming at 19.5 knots, your vessel burns 297 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 15 knots?
Fuel consumption for displacement vessels is approximately proportional to the cube of speed. Reducing speed from 19.5 to 15 knots results in a fuel consumption rate of 135 bbls.
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