New KG after Weight Addition

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

StabilityKG

Initial KGmInitial displacementtAdded weighttAdded weight KG above keelm

New KG: 8.274m

Changing the inputs requires JavaScript. The calculator above shows its default inputs and 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)

In short

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

Learn the theory Intact stability