1. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.30 The turbine capacity factor as a function of power plant effectiveness for single effect tidal power plants. (Data from Fay, J., and M. Smachlo. J. Energy, 7 (1983): 529.)

2. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.31 The tidal power plant at Annapolis Royal, Nova Scotia, Canada. In the foreground is the entrance to the power house from the tidal pool; in the background is the exit into the tidal waters of the Annapolis Basin.

3. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.32 Twin tidal current power turbines and support structure. (Courtesy of Marine Current Turbines, Ltd.)

4. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.33 The ratio of tidal current power to its maximum value as a function of the fraction of the tidal period, as given in Equation (8.40).

5. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.34 The profile of an ocean wave of wavelength λ and wave height H.

6. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb

7. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.36 A plot of the ratio of wave power to rated power versus the ratio of wind speed to rated wind speed.

8. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.37 The annual average wave power along coasts of western Europe (numbers are values in kW/m).

9. Copyright © 2011 by Oxford University Press, Inc. Energy and the Environment James A. Fay / Dan S. Golomb FIGURE 8.38 A sketch illustrating the operation of the Salter wave power system.