To see the scenic/visual effect on tourism and residents of these proposed projects see the visual resource study of offshore industrial wind turbines by Robert Sullivan of the Argonne National Laboratory where field studies were completed in 2011.   Field work was done at UK offshore wind turbines that were much smaller than proposed for Hawaii.  The UK turbines were 400 ft or smaller and not 600 ft.or higher. (700 ft.) for Hawaii waters.   You will read in the Argonne offshore wind study that the IWTs can be seen for 25 miles or more away and were a definite negative factor on tourism and at night the red flashing lights were also a major negative.  

Interesting that Peck the former State Energy Administrator is working for one of the wind developer.
Go to Wind Action Alert at www.windaction.org to see photos of a newer industrial wind turbine project off. The coast of England and to read news accounts about the many problems and fallacies of onshore and onshore IWTs.