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Prop Slip Calculator

boat speed formula

Use this calculator to figure out just about anything in regard to propeller, ratio, RPM and speed. You can change one parameter and recalculate the rest. Use the CalcT button to figure the theoretical speed from the actual speed and slip. Be sure to take a look at the Prop Slip page for an explanation of how to find your prop slip. revised 8-26-24

Gear Ratio Pitch RPM   Theoretical Speed Use this button to calc Theo speed from Slip & Actual Speed Slip Actual Speed
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