What can be determined from a statical stability curve?

A statistical stability curve provides critical information about a vessel’s stability characteristics as it undergoes heeling. One significant aspect that can be determined from this curve is the angle of inclination where the maximum righting arm occurs. The righting arm is the distance between the center of gravity and the center of buoyancy when a vessel is tilted. This distance indicates the vessel’s ability to return to an upright position after heeling due to external forces, such as wind or waves.

Identifying the angle of maximum righting arm is crucial for assessing the vessel's stability and determining how resilient it is to rolling in response to different conditions. This aspect is vital for ensuring safety at sea, as it helps in understanding how the vessel will behave in various scenarios, including rough weather, which could potentially lead to capsizing if not properly managed.

In contrast, the other options refer to specific physical attributes or performance metrics of the vessel, such as maximum displacement, speed, or draft, which are not determined from the stability curve itself. The curve focuses specifically on the dynamics of stability, allowing for the evaluation of how the vessel will perform in terms of returning to an upright position after being disturbed.