Abstract: A movable centerboard for water craft capable of multiple settings having an upper position within the hull, a lower position at full depth below the hull and multiple settings therebetween such that the system is adapted to receive and operate the centerboard from above. The centerboard and centerboard well are adapted to operate in concert whereby, multiple board positions may be utilized. Introduced from above, the centerboard slides down to an upper position within the hull, from here it can either pivot up completely into the well or it can continue to slide diagonally to its maximum depth whereupon it can pivot to the vertical lower position. The selected positions of the centerboard are held in place by a control pressure wedging device from above, whereupon being struck from below will release allowing the board to pivot and transverse up into the well.