Web series / Duracell Project: Lengthening the boat from a female mold


Matt continues to design the new stern of his Duracell sailboat. In the first episode, he explains the design methods and preparatory work, before continuing in the next episode, at the bottom of the page, on the lamination and the female planking mold.

Design the new boat cockpit in 3D

To come up with the exterior look of Duracell with its extended stern, Matt started by using battens directly on the boat and working with pencils from the salvaged paper form plan. When it came to designing the cockpit, he finally relied on a friend to introduce him to computer-aided design, or CAD. From the shape plan, she traces the hull. Matt was then able to work on 3 possible layouts for the new cockpit.

At the same time, he began to cut out the parts of the boat to be removed and dismantled, with difficulty, the central chainplate of the backstay. The new rigging provides for a crow's foot and two side chainplates.

Facilitating construction

After analyzing the different scenarios, Matt opted for a transom geometry that favors flat surfaces. This will facilitate the construction. This is also why he chose a fixed bathing platform. The tilting alternative, while attractive, poses maintenance problems that Matt wants to avoid when traveling.

Once the choices were made, Matt used the existing transom to laminate the first flat side. Using CAD, he finds the dimensions of the hull at the level of the 3 future rear bulkheads. He traces them to obtain the sections of the future planking mold. These are then fixed on the boat for the next lamination.

More articles on the theme