GZ from KN Cross-Curve

Righting lever GZ at a given heel from the KN cross-curve value and current KG.

StabilityGZ

KN (cross-curve value)mKG (vertical centre of gravity)mHeel angle°

GZ: -1.950m

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

GZ = KN - KG \cdot \sin(\phi)

Symbol	Meaning	Unit
$KN$	Cross-curve value at heel	m
$KG$	Vertical centre of gravity	m
$\phi$	Heel angle	°
$GZ$	Righting lever	m

Source: Derrett & Barrass - Ship Stability Ch.18; IMO IS Code MSC.267(85)

In short

Righting lever GZ at a given heel from the KN cross-curve value and current KG.

Learn the theory Intact stability