Ship stability refers to a vessel's ability to remain upright and balanced in the water. It is influenced by factors such as the ship's design, weight distribution, and the position of its center of gravity. A stable ship can withstand waves and wind without tipping over, ensuring the safety of its crew and cargo. There are two main types of stability: static stability and dynamic stability. Static stability is determined by the ship's shape and weight distribution when at rest, while dynamic stability considers how the ship behaves when in motion or affected by external forces. Proper stability is crucial for safe navigation and operation at sea.