Pocket Luxury Yacht The X4⁰ is the smallest model in the Pure X range; blending quality, performance and styling with cruising capability. Hot out of the X-Yachts Design Office came the X4⁰, a forty-foot performance cruising yacht that is just as capable for some serious mileage, as it is blasting around the cans at the weekends. The new baby Luxury X-Yacht joins the hugely successful and critically acclaimed Pure X range. The design philosophy was very clear from the outset - like all our yachts, we place a huge emphasis on giving the owner a superb and comfortable sailing experience, on a yacht that is easy to handle by all the crew. X-Yachts has developed an online web-configurator for each of the Pure X models, enabling you to design your own version of the sail yacht. Configure your own dreams.