Boat Speed Estimator

Engine Revolutions Per Minute.
Theoretical distance prop moves forward per revolution (in inches).
e.g., 1.81:1 (Enter 1.81). Typically found on your engine tag.
Typical values range from 5% (high performance) to 20% (heavy load).
Used for general reference.
Choose the desired output speed unit.
Performance Analysis

0

Theoretical Speed

0

Estimated Actual Speed

Speed Loss Visualization