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→Ballast to Displacement Ratio
[Based on sail boats]
Ballast/Displacement Ratio = Bt/D * 100
Ballast displacement ratio is the boat’s ballast divided by the boat's displacement converted to a percentage. This ratio indicates the resistance to heeling (stiffness). An average ratio is approximately 35%. A higher ratio indicates greater stiffness.
== Displacement to Length Ratio ==
Displacement/Length Ratio = D/(0.01 * LWL)^3