The lower part of the drawing shows the arrangement on the centreline, looking out to the side. On the inside of the side shell are:

- a 9mm ply sheer strake doubler which is intended to spread the leeboard loads into the 6mm ply side shell;

- a 22x22 (1"x1") inwhale (US: 'sheer clamp') screwed through the side shell into the gunwhale;

- blocks on top of the doubler where the leeboard jam cleats are mounted and where the leeboard pivot pin holes are - the jam cleat blocks are only there to avoid the cleats being recessed under the inwhale, but the leeboard mounting blocks are major structural elements;

The top part of the drawing shows the view on the side shell from outside the boat with two components:

- the 35x15 (1-1/2"x3/4") gunwhale that runs the full length of the side shell - it is fixed by screwing through the side shell into the gunwhale from the inside, before the inwhale is added;

- a downward extension of the gunwhale (made from the same stock) in way of the leeboard pivots to fully support the leeboard pivot pins.