The basic form of an OWC is a mostly closed chamber that is
open to the sea at the bottom and open to the air via one or more
air turbines. The most popular design is known as the Wells
Turbine, and involves symmetrically shaped airfoils mounted at
901 to the airflow. However, other turbine designs could be
applied as well such as variable-pitch turbine blades. Although
the flywheel motion of the turbine does provide some energy
storage, the overall output of an air turbine is generally highly
variable [49] depending on the designs. A significant amount of
power will probably be required in order to connect the OWC to
the grid. Thus, the investigations of the OWC wave energy are an
important step in harnessing the wave energy in Malaysia