Brian,

I was reminded in a design class that it was a resonable idea to allow
enough room to remove the prop without removing the rudder or engine.
Even on long keel boats, propellors sometimes take damage.

Matt Colie

Brian Cleverly wrote:
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