Sat Aug 27 16:05:55 BST 2011 by Michael Dowling Intuitively,the
clam-shell design looks like the most efficient power producer.I
guess the weak point is the hydraulic piston and cylinder,which
must cycle millions of times between maintenance shutdowns while
withstanding corrosion from seawater. Mon Aug 29 07:38:24 BST
2011 by Sandy Henderson Hi Michael - professor Salter's duck was
probably one of the most efficient wave converters. Because the
energy was taken by the forced precession of flywheels inside
the comma shaped "duck", this could be sealed from corrosive
seawater and hence remain more reliable. It's drawback was that,
like horizontal axis wind turbines it required to be aligned
with the prevailing wave crests and could overtip with an
excessively high wave. What the article omits is that tuning any
wave device should involve changing the moment of inertia of the
device, because ,although it may take a matter of seconds to
complete, the action of the wave of water on the device ( any
device ) is a c