The 55m WallyPower, developed by the WallyDesign department for a European prospect, is a mega yacht characterized by a displacement hull that is derived from navy hydrodynamic technology. The hull shape is the result of an extensive R & D program that included tank testing and CFD computer design, and is characterized by high efficiency and reduced pitching than traditional hulls. The exceptionally high free board enhances safety in rough seas, without contaminating the lines of the yacht. The glass superstructure and the very large portholes (each guest cabins features four portholes 2,5 m – 8’2” wide and 0,5 m – 1’ 8” high) flood the interiors with natural light while providing 360 degree views from the upper decks and enhanced visibility from the lower decks. The cruising speed of this mega yacht is 17 knots; the construction is high tensile steel for the hull and aluminum light alloy type for the superstructure. The displacement is 780 tons. The advanced antirolling system of VT Naiad Marine Stabilization at anchor, combined with a DATUM control system stabilizes the 55m WallyPower both under way and at anchor.