Could it be for clearance when the rudder is deflected?

Roger

http://home.earthlink.net/~derbyrm

"Brian Cleverly" wrote in message
...
Does anyone have any thoughts/theories on the reason for extending the
prop aperture into the rudder when the rudder is hung off the back of a
long-keel.

I would imagine it would drastically reduce rudder efficiency, but
possibly allow more of the prop to receive undisturbed water when
backing-up.

Thots anyone ?

Brian C