Join Date: Jun 2000
Location: CT/ Long Island Sound
Thanked 91 Times in 90 Posts
Rep Power: 20
Re: Interesting rudder design
Have to agree with Jeff. Current twin rudder designs try to get the windward foil out of the water when the boat heels so that it DOESN’T create drag and try to turn the boat’s bow down into the water. The pictured boat would have to heel a LOT to get the windward foil clear. It is essentially doubling the wetted surface and as Jeff suggests, still not doing a good job. Also, imagine how far over the boat would have to be heeled in order for the leeward foil to be anywhere near its most efficient “vertical” position. 30-40º? Yikes! Maybe the shape helps serve as a “flopper-stopper” when the boat is at anchor, to keep it from pitching in a short sea. Might do that quite well.
Last edited by paulk; 3 Days Ago at 11:23 AM.