The second post on the Quidnon blog blog, which I started almost exactly four years ago, was titled “Hull Shape” and featured the sketch shown on the left. A lot of work went into it. Concerns such as minimizing cost, maximizing ease of construction, maximizing interior living space and many others were addressed. A key feature of the design was the ability to combine the structure of the keelboard trunks with the water ballast tanks. Their position and size were based on many constraints, but the result was that water ballast alone turned out to be insufficient. Although it was more than enough to ensure stability under sail, more ballast would have to be added further aft in order for the boat to sit on its lines.