Yachts of this size and complexity require many brains to design, style and engineer. Ron Holland provided the naval architecture in collaboration with Perini Navi's design staff, and his input shows in Fidelis' clean wake. You'd expect such a heavy yacht to dig a big hole amidships and sculpt a frightful quarter wave in her effort to exceed the traditional speed/length ratio of 1.34, but Holland's design keeps wave-making resistance to a minimum. Even at 1.34, Fidelis has a top speed of 16.45 knots, but I had no way to confirm her ability to reach, or exceed, that speed in the light air off Porto Cervo. On the upside, the ratio of sail area to wetted surface allowed her to ghost along at 5.4 knots in a true wind speed of 8 knots, 40 degrees to the apparent wind.