Abstract: A pontoon boat that includes a pair of pontoons, a chair, a parallel linkage system for maintaining the pontoons in spaced apart parallel relationship and mounting the chair for movement between a position the chair seat is at a higher elevation than the pontoons and a position at a lower elevation than the surface of the body of water in which the pontoon boat is being used, power operated mechanism within one of the pontoons for operating the linkage system to move the chair between its positions, a motor mounted by each of the pontoons for propelling the boat, the propelling motors being operable at different speeds and/or forward and reverse for controlling steering, and controls mounted adjacent to the chair for controlling operation of the propelling motors and the power source for operating the linkage system, each pontoon having a compartment that may be flooded with water and a pump for pumping water out of the compartment.