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- Q127 - Navigation Problems: Oceans
370. If the speed necessary for reaching port at a designated time is 12.6 knots and the pitch of the propeller is 13.6 feet, how many revolutions per minute will the shaft have to turn, assuming no slip?
The shaft will turn at 94 RPM. Converting the speed from knots to feet per minute and dividing by the propeller pitch yields approximately 94 revolutions per minute, assuming no slip.
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