What does the term "keel" refer to in nautical terminology?

The term "keel" refers to the bottom-most part of the ship, which is essential in both stability and structural integrity. It serves as the backbone of the vessel and runs along the centerline from the bow to the stern. The keel helps to provide the necessary balance and ensures that the ship has a proper draft, aiding in its ability to sail efficiently in the water. Additionally, the keel contributes to the vessel's ability to resist sideways forces, such as wind and waves, thereby enhancing its overall seaworthiness. Understanding the function and importance of the keel is crucial for anyone studying nautical practices.