[C320-list] Wing keel draft

[Bill Culbertson]

John,

If Chris's #867 has the 4'5" ish draft, then so should your #929 boat.  The sequence was short, deeper, short again.  And the manual definitely did not keep up with this change.  We asked GerryD about it at the 2004 regatta and he explained it.  He also indicated that the manual and the brochure didn't track the changes.

What happened was that original boats had a shallow bilge and a wing keel that gave them about 4'5"-ish draft.  Somewhere along the line, I think in the #500's, they made the bilge deeper. They didn't change the keel so the draft increased 6" or so.  A few years later, they switched wing keels to use the Catalina 310 keel.  That shortened the draft back into the 4'5"-ish range.  Gerry emphasized that the performance is unchanged across the keel switch.  The shorter 310 keel is supposed to provide the same righting moment.

 -Bill Culbertson
  Harmony  #859


----- Original Message ----
From: Chris Burti <cburti at yahoo.com>
To: C320-List <c320-list at catalina320.com>
Sent: Monday, January 15, 2007 3:28:08 PM
Subject: Re: [C320-list] Wing keel draft


4'5" is what our waterline stripe measured on the hard. Since we have kept her loaded lightly and she floats with the waterline stripe about an inch higher than the waterline, so I'd guess the 4'4"' is correct in our case of a 2001 year 320. Catalina's designer, Jerry Douglas, answered the question previously by stating 4' 6". Since most people tend to load their boats beyond the optimum design specifications, his answer would be correct most often as a practical matter.

Chris Burti
"Commitment"
Catalina 320, #867, 
Farmville, NC


----- Original Message ----
From: John Nicholas <j.nicholas at bigpond.com>
To: C320-List <c320-list at catalina320.com>
Sent: Monday, January 15, 2007 3:00:30 PM
Subject: [C320-list] Wing keel draft


I recently purchased a c320, wing keel and I am uncertain as to what its
true draft is. The manual supplied with the boat (hull #929, built 2002)
says the draft is 4' 10.5". I know that the draft on the c320 with wing keel
was reduced to 4' 4" at some time but I thought that happened some years
before mine was built. Can anyone clarify this point for me?



John Nicholas

Sojourn

C320 #929

Sydney Australia



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