Abstract: The sailboard (1) adapted to receive on its upper surface a mast (2) adapted to support a sail and fixed by a mast foot (3) on the board (1), and foot supports (4) adapted to retain the feet of a user of the board (1) and located rearwardly of the board (1) relative to the mast foot (3). It also comprises flexible elements (6) to support the mast foot (3) cantilevered above the board (1) and to transmit to the board (1) in a region situated rearwardly of the mast foot (3) the forces transmitted by this latter. Used particularly to control the vibrations of the board during its movement on water.