The sleek and speedy Aifos (+39.0584.38191, www.cbinavi.com) is a stunning new showpiece for the Italian yard CBI Navi, which the Fipa boatbuilding group acquired in 2005. The 164-foot yacht, which was delivered last July, utilizes an aluminum hard-chine hull with a semiplaning structure and a pair of 4,200 hp MTU engines to reach a top speed of more than 20 knots. CBI Navi had every piece of furniture aboard Aifos custom built for the yacht, which sleeps as many as 14 guests. Interior highlights include leather floors in the salon, raw metal surfaces, and wavy laser-molded plastic walls in several of the communal spaces and guest rooms. Add in ample deck space for lounging and an eight-person top-deck hot tub, and Aifos is the ideal bachelor pad on the water.