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Trim from Weight Shift

Change of trim (cm) when a weight is shifted longitudinally. Uses MCT1cm to convert the longitudinal moment to a trim change.

StabilityTrim
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Formula, assumptions, and limits

ΔTrim (cm)=wdMCT1cm\Delta \text{Trim (cm)} = \frac{w \cdot d}{\text{MCT1cm}}
SymbolMeaningUnit
wwWeight shiftedt
ddLongitudinal distancem
MCT1cmMCT1cmMoment to change trim 1 cmt·m / cm
ΔTrim\Delta \text{Trim}Change of trimcm

Source: Derrett & Barrass Ch.10; IMO IS Code MSC.267(85)

In short

Compute trim change from a longitudinal weight shift using MCT1cm.

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