apparatus for generating power from wave action comprising a barge and at least one float connected thereto by rigid members pivotally connected thereto by sockets . a watertight cylinder including a piston is attached to the barge . cables connect with the piston and pass through pulleys to the barge . as the wave action rocks the float relative to the barge the piston is moved longitudinally in the cylinder to pump water used for driving a turbine for generating electrical power . wind vanes and water vanes are also included in the float to enhance the rocking action .