to Bill Wilhelm of Key West, Fl we were able to get some dimensions
that will help in fabricating a PY23 keel Centerboard.
My center board is 1 1/8" thick x 12 1/2" x 52 3/4"
over all. Round with an angle at the top and square cut on the
bottom. The pivot hole is centered at 4" from the top. The
pennant shackle is 1 1/2" in from the trailing edge and 26"
from the top. The 45" leading edge is rounded and the
trailing edge is tapered down to about a 1/4" thick.
I've broken mine in half before and found it to be of a hollow
cavity design with lead shot in the cavity.
Here are some pix from Bill that will help too!
Jim Horman also confirmed
the dimensions and also let us know the bolt is 5/8" diameter!