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Natural Roll Period - Rational Formula

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Natural rolling period from GM and ship beam - the Weiss formula used for synchronous rolling check and inclining verification.

Formula

$$ T_r = \frac{2 C B}{\sqrt{GM}} $$

Symbol legend

SymbolMeaningUnitSource
$GM$Metacentric heightminclining test
$B$Breadth (moulded)mship particulars
$C$Roll-radius coefficient-Weiss formula

Sources

  • Weiss formula - Bureau Veritas NR533.
  • IMO MSC.1/Circ.1228.

See also

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