The diagrams below show the design for a wave-energy machine and its location. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The figures below illustrates the structural design of a wave-energy machine and where it should be located. Overall, the renewable energy is produced with tha help of waves. Initially, the air flows through the top of the turbine, which is located in the upper chamber of the machine. Furthermore, the waves hit the lower chamber with speed that is enough to create air flow from the bottom of the turbine. The increase in water levels helps in creating the pressure which enables the turbine rotate at a pace required enough to generate electricity. These wave-energy machines can be installed at two different locations. One of these is installing it close to the sea bed. The main advantage of this is, it takes less costs to install but, the small waves result in low electricity output. On the other hand, placing them at a farther distance from the sea bed gives a higher energy output because of the larger waves. Also, it takes high costs for installation.