The Ballast Ratio is the amount of ballast a design is carrying. This ratio is often displayed as a percentage. The higher the percentage, the greater the righting moment, *i.e.* better ability to resist heeling.
The calculation is very popular because its simplicity and the fact that the values of ballast and the displacement are easily available.
The article relates the Ballast Ratio to thousands of sailboats.

How to calculate the Ballast Ratio (keel %)?

Ballast ratio

Abrev. | Unit | Description |
---|---|---|

Ballast | kg | The weight of the keel |

Disp. | kg | Displacement |

The unit can actually be kg, ton, lbs, or any other weight unit as long as it is the same for both ballast and displacement.

Ballast ratio scattering

Ballast ratio for the average boats