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Green Water - Exceedance Frequency

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Expected number of green-water events per hour based on freeboard and relative bow motion σ - sensitivity for hatch / bulwark design.

Formula

$$ n = \frac{3600}{T_z} \exp(-F_B^2 / 2\sigma^2) $$

Symbol legend

SymbolMeaningUnitSource
$F_B$Bow freeboardmload line
$\sigma$σ bow relative motionmstrip theory
$T_z$Zero-upcrossing periodsspectrum

Sources

  • NORDFORSK 1987.