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New KG after Vertical Weight Shift

KG change when an existing weight is moved vertically - e.g., lowering a lifeboat, moving cargo from under-deck to deck.

StabilityKG
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Formula, assumptions, and limits

KGnew=KGold+wΔhΔKG_\text{new} = KG_\text{old} + \frac{w \cdot \Delta h}{\Delta}
SymbolMeaningUnit
KGoldKG_\text{old}Initial KGm
wwWeight shiftedt
Δh\Delta hVertical shift (positive up)m
ΔΔDisplacementt
KGnewKG_\text{new}New KGm

Source: Derrett & Barrass Ch.11

In short

KG change when an existing weight is moved vertically - e.

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