Rudder profile
Jerry,
The new rudder will take on the profile of the alternative profile as depited on Alberg's line drawings of the Commander and as can be seen in the manual. This profile, I believe is referred to as "constellation" is very near identical to Albergs design of the Bristols, Cape Dorys and others.
The rudder foil (blade) will be of BS1088 ply core, permanently affixed to the bronze rudder shaft and encased in glass. All metal, is silicon bronze, either herculoy or everdur, with the exception of the pins that will hold the strap and rudder shoe on, that will be copper.
Respectfully,
Chance Smith
(Formerly) Sea Sprite 23 #760 (Heritage)
(Formerly) Commander #256 (Ceili)