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3587Wing_keel_installed_061404
Wing keel for Irwin 23 modified

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Photo Details
Milton Thrasher


Amateur boat builder

Registered: May 2004
Location: Sarasota, FL
Posts: 96
users gallery
This view shows how the plywood wing keel prototype
stern end now matches up with the
end of the keel. If the surface is too far back, some of it can be cut away to achieve perfect balance through trial and error.
· Date: June-15-2004 · Views: 10705
· Filesize: 51.7kb ·
Additional Info
Rating: ****** 6.00
Keywords: wing keel

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spank
Junior Member

Registered: February 2004
Location: Boston
Posts: 51
June-27-2004 8:46pm

doesn't really look like an improvement

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Milton Thrasher
Amateur boat builder

Registered: May 2004
Location: Sarasota, FL
Posts: 96
June-28-2004 10:09am

I suspect your comment has to do with my moving

the wing keel prototype back 8". It did make the

helm more balanced and thus the boat seems to be

faster. Yesterday in winds less than 10 with gusts

a little more, we had a Garmin GPS that showed we

got up to 6.2 mph!



Now that the boat is better balanced and seemingly

pointing as well as it would with a centerboard, I

will now incrementally cut away some of the surface

area to reduce the wetted surface.
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AlaskaFisherman
Junior Member

Registered: December 2004
Location: Kenai, Alaska
Posts: 76
December-29-2004 2:34pm Rating: 6 

I am looking for changes to my semi-displacment hull. Is there math to size of wing for length of hull. I'm just a fisherman - no formal training in boat building.

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