[C320-list] Crack Between Hull and Keel

[Chris Burti]

Please take pictures of the project and send this and any additional
comments to Allen ...this would make a great Mainsheet article.

Chris Burti
Farmville, NC


On Wed, May 10, 2017 at 7:43 PM, Dave Hupe <hoopdtwo at yahoo.com> wrote:

> Update......
>
> I have been in communication with Catalina Yachts in Florida (wrapping up
> with Gerry Douglas who has been involved with the 320s since their
> inception/hull #1). The following is their recommended repair to hopefully
> prevent this problem from recurring:
> 1) haul the boat again letting the keel hang to keep the rear crack open
> fully during the repair
> 2) clean out the interface all around the keel at least 2 inches outward
> on the hull and keel (to eliminate mixed repair materials from past
> fairings)
> 3) use thickened epoxy to fill in again (use West Systems epoxy -
> thickened as needed)
> 4) fiberglass at least several layers all around the interface with 1808
> material (Available data on the internet says this material contains 18oz
> fiberglass woven at 90 degrees. On the backside a layer of 3/4oz fiberglass
> mat is also attached. This material reportedly offers strength in various
> directions and is great for many projects. Thickness is .048")
> 5) Add fiberglass layers extending about 6 inches outward on both the hull
> and keel .... to form a fillet (like the newer 320s that have the deeper
> bilge) which should sufficiently strengthen the area so that such
> cracking/separation doesn't repeat from seasonal lifting/putting on cradle
>
> I spoke with Gerry about adding an additional aft keel bolt (say adding an
> 11th keel bolt/lag screw in the aft bilge area to support/reinforce the
> rear part?). This is not recommended by Catalina.
>
> Wish me luck!
>
> Dave Hupe
> 1994 Hull #32
> Holland, MI
>
>
>