Re: [Paddlewise] retrofitting bulkheads

From: <FoldingBoats_at_aol.com>
Date: Wed, 21 Feb 2001 12:32:06 EST
Marvin, skylakeboatworks_at_yahoo.com writes:
Why do so many designs have/show the bulkheads so far forward/aft?  ... inordinate amount of extra water (read weight) in a flooded cockpit?  ...

Ralph Hoehn: I based a tortured plywood I built a few years ago on Chris Kulczicki's "Yare" design. This design has a reputation for relatively low stability and a wet ride. In both cases this reputation is deserved in my experience.

I built the boat in three sections, creating three completely separate compartments through the use of double bulkheads. The forward bulkhead is slanted forward in such a way that I can comfortably brace my feet on it when my knees engage the underside of the coaming, the aft bulkhead has the opposite orientation and ends as close to my sitting position as it can without actually interfereing with it. The location and the slant of the bulkheads reduces the volume of the cockpit to an absolut minimum.

I reduced the volume of the cockpit further by running a foam "pool snake" under the coaming on either side of the cockpit and around the back of it. Of course this also provides floatation and acts as a comfortable and secure hip and back brace. 

The last place where I could add floatation / volume reduction is in the forward upper corners of the cockpit and in the form of a vertical longitudinal separator for the cockpit. The latter would interfere with my ability to re-enter the boat from the water however and therefore I will probably not go to that step. 

As it is, even when rolling ("practising "inversion recovery" ;-) without spray skirt, the resulting water in the cockpit does not destabilize the boat to what I wold consider a dangerous degree.

Ralph C. Hoehn
Ralph_at_PouchBoats.com
www.PouchBoats.com
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Received on Wed Feb 21 2001 - 09:33:08 PST

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