Sea wave energy is converted into electrical or mechanical energy. When a sea wave is pushing up a float, a transporter arm is pushed up inside a sealed box. This pushing up motion converts linear motion of the transporter arm into kinetic energy for a chain belt and an upper sprocket which are moving in a rotational path. When the float is moving down because the sea wave is receding, the transporter arm also comes down. This downward motion converts the linear motion of the transporter arm into rotational motion for the same chain belt and a lower sprocket which are moving in the same direction as the chain belt moves with the upper sprocket.