The transom of a boat is one of the most critical parts of the hull structure, especially outboard driven boats. This older style Southwind had some serious transom issues. Once opened up we could see that a DIY repair had been attempted along the top section, with stainless rods inserted down about 100mm hoping that this may extend the life, however the rest of the transom was sodden mush! We prepared the transom and then installed the composite board before glassing this all back together. The advantage of the composite board is that it will never need doing again as long as its done right. Thermolite board will not soak up moisture, rot or delaminate if bonded together using epoxy. Once the structural work was complete we refaired and painted the transom to match the hull. We refitted the engine and swim platforms, and the boat was ready for action once more!