Recent attention in sailing has shifted towards foiling boats, which can rise above the free surface of the water in order to reduce the drag force. This is achieved by placing small wings under the boat, which provide a supporting force that allows the boat to rise. These wings consist of two main surfaces: a vertical surface, which is used to counteract the lateral forces of the sail, and a horizontal surface, which is the source of lift. At the junction of vertical and horizontal surfaces, is made a structural connection. This joint, named Bulb, has a tapered shape in order to reduce its disturbance to the flow.