A full keel is a type of boat hull design characterized by a long, deep keel that extends downward from the bottom of the boat. This design provides stability and helps the vessel maintain a straight course in the water. Full keels are commonly found on larger sailing vessels, such as yachts and sailboats, as they offer better tracking and resistance to sideways movement. The full keel's shape allows for a lower center of gravity, enhancing the boat's balance and making it less prone to capsizing. While full keels can be slower to maneuver compared to other designs, their stability makes them ideal for long-distance cruising and offshore sailing, appealing to many sailors and adventurers.