A full keel sailboat is a type of sailing vessel characterized by its long, deep keel that extends well below the waterline. This design provides excellent stability and allows the boat to track straight while sailing. Full keel sailboats are often favored for their ability to handle rough seas and their strong performance in various wind conditions. These boats typically have a larger hull volume, which contributes to increased storage space and comfort for crew and passengers. Many classic cruising sailboats, such as those designed by Herreshoff or Hinckley, feature full keels, making them popular choices for long-distance voyages and leisurely sailing.