Portager: Sea Rider Surface Drive
"Sea Rider is a motorboat drive that can be defined as a stern group with surface propeller. Sea Rider currently covers a 50 to 4,000 bhp power range. The project includes a particular propelier design with a concave area in the back of the blade." http://www.lamemarine.com/
Posted by: Portager - website: http://www.portager.com
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