Last year I built the “UnterSeeBoot” and had some nice hours riding on the edge but the longer I ride the harder it was to ignore the signals of the lower part of my body… so this year I decided to do something for my 51 ear old butt… here it is. It’s made from 10mm marine grade ply and cedro. To initiate the forces to the hull I add two frames between bulkhead one and two and two vertikal knees below the deck at the frame positions. All joints made with epoxy. I add a peace of harder mahogany where I later glued in the oarlocks. The mod adds about 2,3kg of weight, thats worth of it (my butt’s opinion…).
Here you find a lot of photos about the process
My “Drawing”:

Preparing the boards
The board is about 150mm wide and 850mm long
model and one board scarfing the edges routing just a narrow 10mm deep groove the rest was chiseled here the result fine tune the edges drilling holes for screws dry assembling
Preparing Frames and Knees
preparing additional frames preparing knees, elongate edges transmit edges to model cut out model transmit to cedro and cut out prepare for glueing all is sanded down at least to the epoxy layer cover the varnish
Glueing and Paintwork
glueing making fillets between board and gunwale coating wood with epoxy primer Painting (sanding before…) varnishing the clear coat glueing oarlocks pad for oarlock
Sailing…

From now: Sailing without pain!