Cheating with the Stern Section

I added a prop tunnel to jigsaw to minimize draft and give added protection to the Propeller , but the practicality of creating the tunnel in complex compound curves out of sheet plywood while possible , is not easy . Therefore I cheated !  .   The basic cutout in the hull is formed by flat layers of sheet plywood in a basic shape , thus creating the structural base of the entity , the final shape will be created later out of fiberglass and foam , much easier   in this  medium . I used a similar technique  on the conical bow sections but that was a single curve where this is a compound ( 2 directions ) curve therefore more flexibility was required.

As you can see we also have a much curvier hull shape compared to the earlier 2 sections ,  as the hull lines make their way back up to the stern ,nice to see as straight lines are so boring.

This is only the first skin layer , still another to add , the second skin covers the edge of the first so as to increase strength and minimize the exposed edge of the ply , still its all covered with layers of fiberglass later anyway .

In the first picture you can just make out a bolt emanating from the  front of this section , this is the keel height as taken from the previous section , by the time it reaches the tunnel and propeller position it will be almost 800 mm from the base of the tunnel , not inconsiderable .

I had toyed with the idea of a propeller strut instead of a full keel but stuck with it as it gives more protection and at the design cruising speed of 6 knots shouldn't affect the propeller efficiency too much .