Hello Derek and thank you for taking the time to look at my build.
The reason that the frames look a little fat and or skinny is a little technique I am trying. First all the frames are made to the same 5mm thickness, (see earlier photos) then where there is a curve in the hull I added some extra thickness and sanded it to the hull contour. I only did this because the extra surface area allows for more adhesion to hold the planks in place. Once in place I have three mm thickness to be able to sand and get a lovely smooth contour. It seems to be working so far although time will tell.
I got the plans from freeship plans. Two sheets, one sheet is a drawing of the ship and the other is a side and plan view. The size of the drawing is about 15cm total length and if you try to zoom in it goes all pixelated and blurred. Add to that all the details are numbered for a close up view (about 15 items) but only 3 or 4 are shown bigger. mmm

I copied as much as I could onto a bigger sheet by zooming the scale on the screen to 1metre =1cm and multiplying by 4. that gave me a 26metre boat turning out at 104cm model. The frames numbered 1 to 9 were on the drawing, the a,b,c and d frames were added by me to give a little more structural support.
I just had another look at the photo and realise that it may be the camera angle that makes it look a bit flat because on the boat its a lovely smooth curve

As for the glue well erm (U2 lowers his head and twists his right foot from right to left) its superglue.......
I tested a few planks by gluing them and then trying to snap them apart and it was always the wood which broke first so I assume its strong enough.
I will be sealing all the wood both inside and out before im finished.
and the point about the wood splitting, your right some did, I bend it before gluing it in place and the ones that split didn't get used.
As long as it floats and looks reasonable when its finished I'll be happy...... watch this space. U2