A keel is a structural element found in boats and ships, running along the bottom from the bow to the stern. It provides stability and helps the vessel maintain its balance in the water. The design of the keel can vary, with some being deep and long, while others are shorter and shallower, depending on the type of vessel and its intended use. In addition to its role in stability, the keel also aids in steering. It works in conjunction with the rudder, allowing the vessel to navigate effectively. Different types of keels, such as fin keels and full keels, are used in various types of sailing vessels, influencing their performance and handling characteristics.