GM from Inclining Experiment

Compute metacentric height from a controlled weight shift and pendulum deflection - the lightship inclining test at delivery and every 5 years.

StabilityGM

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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

GM = \frac{w \cdot d \cdot L_\text{pend}}{\Delta \cdot \text{deflection}}

Symbol	Meaning	Unit
$w$	Each inclining weight moved	t
$d$	Transverse shift distance	m
$L_\text{pend}$	Pendulum length	m
$Deflection$	Pendulum horizontal movement	m
$Δ$	Ship displacement at test	t
$GM$	Metacentric height	m

Source: IMO IS Code MSC.267(85) Part B Ch.7; Derrett & Barrass Ch.17

Compute metacentric height from a controlled weight shift and pendulum deflection - the lightship inclining test at delivery and every 5 years.