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Waterplane Area Coefficient (Cwp)

Ratio of waterplane area to enclosing L × B rectangle - drives TPC and BMt.

StabilityForm coefficient
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Formula, assumptions, and limits

CWP=AwLBC_{WP} = \frac{A_w}{L \cdot B}
SymbolMeaningUnit
AwA_wWaterplane area
LLWaterline lengthm
BBWaterline beamm
CWPC_{WP}Waterplane coefficient

Source: SNAME - PNA Vol I

In short

Ratio of waterplane area to enclosing L \u00d7 B rectangle - drives TPC and BMt.

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