Rick,According to Sailrite's database here are your numbers:O'Day 23 Mark I / Up to 1974I = 28.0J = 10.0P = 24.0E = 9.33O'Day 23 Mark II / 1977 and UpI - 28.0J = 10.0P = 23.5E = 9.0Hope this helps.Ben AllenMontgomery, AL"Wahoo"OD 26
I have a 1979 O'Day 23, and according to the blueprints which were conveniently provided by the former owner (Design No. OD-23-II, dated April 11, 1977), the sail plan dimensions are:P=23.5P2=28.0B=9.0J=10.0
Rick, I've got a 1972 23' O'Day on Lake Lanier also. Looks like you've already got the sail measurements in other responses, but let me know if there's anything else I can help you with, since we're on the same lake. I'll be sailing all day tomorrow!
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