My boat has a fixed, two-blade prop. Seems to work fine.

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"j" ganz @@
www.sailnow.com

"Gilligan" wrote in message
. ..
Volvo makes 4 bladed folding propellers:

http://www.great-water.com/pages/pro...lding-prop.htm

High efficiency

Low noise

Low cavitation.

Does MarTec make anything like this?