Integrated into the stern of the boat, the CapeHorn Self-Steering System becomes virtually as strong as the boat itself. A tube (called the Mounting Tube) is fibreglassed strongly to the transom; its forward end held by struts fastened up to the underside of the deck or down to pads glassed to the hull. Inside this tube, a smaller tube is allowed to pivot, linking the servo-pendulum trailing behind the boat, to a quadrant inside the lazarette.