What limitation does a curve of statical stability have?

The limitation of a curve of statical stability primarily lies in its inability to account for dynamic ship movement. Statical stability analyzes the equilibrium of a vessel in a static condition, typically using the center of gravity and buoyant forces to determine how a vessel will respond to tilting gently to one side. This analysis assumes that the vessel is in a stable, calm state without any external dynamic influences, such as waves, wind, or acceleration.

In a real-world scenario, vessels experience various dynamic forces that can significantly affect their stability. These forces can cause the ship to behave unpredictably, leading to increased heeling or rolling that the statical stability curve does not predict. Therefore, while the curve provides valuable insights into the vessel's static stability at various angles of heel, it falls short in scenarios where dynamic factors are in play, highlighting its limitation for seafaring conditions that are rarely calm and stable.