A high performance trailer sailer which you can build for yourself from plans, this design was drawn as a little sister to the DIDI 38 which I designed and built for myself in 1994/95, and the more recent DIDI 34 and the Didi Mini, to the Mini 6.5 rule. Most recent addition to this range is the Didi 23
Simple Plywood Construction
It employs the same basic radius chine plywood construction technique, scaled down to suit the smaller boat but takes it a step further into the plywood precut kit concept. The small size of the vessel permits the elimination of the laminated floors needed to support the keel loads in the larger boats. Keel loads are, instead, carried by bulkheads and the structure of the keel box. All of these parts are plywood and epoxy filleted together, making for simplified construction.
The backbone is also of plywood, on edge, slotted through the bulkheads as a self-jigging eggcrate arrangement to assist setting up the framework. It extends from the stemhead to the transom and has large radius structural fillets to tie it into the hull skin.
Assembly of the hull follows the principles of model aeroplane construction, with stringers slotted into the bulkheads for attachment of the skin. The hull skin is single skin plywood to the sides and bottom and the radius is done in two layers.
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