Standards › Stability

IMO intact stability

Intact stability — GM, righting arm, wind heel

This page describes intact stability — gm, righting arm, wind heel and the associated engineering assessment topics. Project use requires qualified inputs and engineering review.

Published capabilities

Assessment topics

  • Compute metacentric height (GM) and the righting-arm (GZ) curve.
  • Check wind-heel and area-ratio criteria against the IMO intact-stability rules.
  • Report the governing criterion and the margin.

Related standards

IMO IS Code GM Righting arm (GZ) Wind heel Intact stability

Part of Floating & Marine Systems · see the platform engine

Questions

What governs intact stability?

The IMO Intact Stability (IS) Code criteria — minimum GM, righting-arm area ratios and a wind-heel check — adapted for offshore floaters and MODUs.

What assessment outputs are described?

GM, the GZ curve, the wind-heel and area-ratio checks, and the governing criterion with its margin.

Discuss a IMO intact stability assessment

Contact AceEngineer to discuss inputs, assessment scope and project requirements.

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