Differentiating Statical Stability & Dynamical Stability: Understanding Ship Balance

This video explains the difference between Statical and Dynamical Stability. It focuses on the Righting lever at different angle of heels, Righting moment, and Area under the GZ curve.

Moment of Statical Stability or Righting Moment at any angle of heel is the moment that represents the ability of the ship to return to its initial position when heeled by external forces.

Dynamical stability defined as the work done in inclining the ship, or the energy required to heel a ship to a specific angle. It is quantified by the area under the righting arm known as the GZ curve up to that angle of heel.
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https://youtu.be/dGu3m7-xNgg
https://youtu.be/_XzOScnYwdU