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The Capsize screening formula is calculated:

For example:
First. Divide displacement by 64: Take the boat’s displacement in pounds and divide it by 64.
Second. Find the cube root: Calculate the cube root of the result from the first step. This is the same as raising the number to the power of 1/3 (or about 0.333).
Third. Divide beam by the result: Divide the boat’s maximum beam (width) in feet by the number from the second step.

 

Interpretation:
A lower number indicates a higher resistance to capsize, making the boat more suitable for offshore passages. A value of 2.0 or lower is often recommended for offshore sailing. However, the value is not very valid or reliable – read more.

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