Ship Transverse Metacentric Height (GM) & Stability Calculator
Determine metacentric height ($GM = KB + BM - KG$), transverse metacentric radius ($BM = I_T / \nabla$), righting lever ($GZ$), and IMO intact stability compliance.
Vessel Hydrostatics & Center of Gravity
Seawater: 1.025, Fresh: 1.000
Vertical height above keel
For GZ righting arm calculation
Stability Margins & Righting Moment
Metacentric Height (GM)
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Righting Moment (Δ · GZ)
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Center of Buoy KB
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Metacentric Rad BM
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Height of Meta KM
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IMO Intact Stability Code Criteria (A.749)
Initial GM ≥ 0.15 m | GZ at 30° ≥ 0.20 m | Natural Roll Period: -- s
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