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Natural Roll Period - Rational Formula

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

RollSeakeepingWeiss
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Formula, assumptions, and limits

Tr=2CBGMT_r = \frac{2 C B}{\sqrt{GM}}
SymbolMeaningUnit
GMGMMetacentric heightm
BBBreadth (moulded)m
CCRoll-radius coefficient

Source: Weiss formula - Bureau Veritas NR533; IMO MSC.1/Circ.1228

In short

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

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