Leeboard
![A Dutch sailing barge showing its stowed leeboard](/Images/godic/202501/23/Klipper_Pegasus_Kieler_Woche_20081715.JPG")
![Thames sailing barges in the East Swin; the vessel in the foreground has a leeboard deployed.](/Images/godic/202501/23/Thames_Barges-Canthusus1716.jpg")
![A modern boat fitted with leeboards, The Centennial designed by Ted Brewer in 1979](/Images/godic/202501/23/Centennial_Sharpie1716.jpg")
A leeboard is a lifting foil used by a sailboat, much like a centerboard, but located on the leeward side of the boat. The leeward side is used so that the leeboard is not lifted from the water when the boat heels, or leans under the force of the wind.