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- Q135 - Navigation Problems: Oceans
575. While steaming at 13.5 knots, your vessel consumes 251 barrels of fuel oil per day. In order to reduce consumption to 129 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
Fuel consumption for displacement vessels is proportional to the cube of speed; therefore, reducing fuel from 251 to 129 barrels per day requires a speed reduction to approximately 10.8 knots.
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