New KG after Weight Addition

Moment-method update of KG when a weight is loaded at a known height above keel.

StabilityKG

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

KG_\text{new} = \frac{\Delta \cdot KG_\text{old} + w \cdot kg_w}{\Delta + w}

Symbol	Meaning	Unit
$KG_\text{old}$	KG before addition	m
$Δ$	Initial displacement	t
$w$	Weight added	t
$kg_w$	Height above keel of added weight	m
$KG_\text{new}$	New KG	m

Source: Derrett & Barrass Ch.11; IMO IS Code MSC.267(85)

Moment-method update of KG when a weight is loaded at a known height above keel.