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- Q127 - Navigation Problems: Oceans
372. If the speed necessary for reaching port at a designated time is 16.4 knots and the pitch of the propeller is 23.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 6% positive slip?
Calculate revolutions per minute by dividing the ship's speed in feet per minute by the propeller pitch multiplied by (1 minus slip).
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