Originally Posted by boatman61
According to Herreshoff, "yawl" had nothing to do with rudder placement relative to the mizzen, and instead, a yawl rig is the sail and mast configuration that suits a yawlboat...
The CCA and the following rules used the rudder post definitions of ketch and yawl so they had a cut and dried definition for measuring sail so boats could be handicapped with boats fulfilling their new and arbitrary definition of Yawl and Ketch receiving slightly different handicaps.
Interesting. Even old sailors learn new stuff sometimes.