Boat Displacement Calculator
Estimate your boat's displacement, waterline area, and theoretical hull speed from hull dimensions and type.
Inputs
ft
ft
ft
Results
Displacement
36,960 lbs
Hull Speed
7.34 knots
Displacement16.5 long tons
Waterline Area210 sq ft
Displaced Volume577.5 cu ft
D/L Ratio611
Classification (1=ultra-light, 4=heavy)4
How to Use This Calculator
- Enter the waterline length (LWL), beam, and draft of your boat in feet.
- Select the hull type: displacement cruiser, semi-displacement, or planing.
- Review the displacement in pounds and long tons — important for loading calculations.
- Check hull speed (knots) to understand your boat's theoretical maximum speed under power.
- Use the D/L ratio and hull classification to compare against similar vessels.
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