Definition
A fin keel is a type of keel on a sailboat—a blade-like structure extending downwards from the hull. It provides stability, preventing the boat from tipping over too easily. It also helps the boat sail in a straight line by resisting sideways movement caused by the wind. Imagine it as the underwater fin of a fish 🐟, helping it maintain balance. Unlike full keels, fin keels are typically shorter and deeper, enhancing maneuverability. They're common in modern racing sailboats.