What are stability limits?

Stability limits refer to the maximum angles of heel a vessel can safely reach without compromising its stability. When a ship heels or tilts, its center of gravity and buoyant force shift, which affects the vessel's ability to return to an upright position. The stability limits are defined by factors such as the ship's design, weight distribution, and the shape of the hull.

Understanding and identifying these angles is crucial for safe navigation and operation, particularly in scenarios such as rough seas or when carrying cargo that may shift. If a vessel exceeds its stability limits, it can lead to capsizing or loss of control, making it essential for mariners to be aware of these thresholds during their voyages. Thus, option C accurately captures the essence of what stability limits are, as they indicate the safe operational parameters regarding the vessel's heel.