According to the "one ocean" idea [1] future global commerce, weather, jobs, food supply, recreation, national defense and other goals are assumed to be achieved; On the other hand, Future Generation Vessels (FGVs) must be equipped with the proper and state-of-the-art technologies, latest research results and new concepts such as "one ocean". One of these technologies which is needed to be considered is stealth technology. In this paper a new ability in building ships stealthy is presented and a typical proposed prototype plan of FGVs is presented. A novel calculation method of ship's radar cross section (RCS) is presented in which a new closed-form formulation of electromagnetic (EM) scattering is derived; also a method for RCS increase/reduction of ships with "Shaping technique" is presented. According to this method a procedure is suggested for shaping the ship's structure. A real three dimensional (3D) model of a given ship (surface Effect ship (SES)) as the primary prototype plan is analyzed and according to this procedure is modified and the proposed prototype plan is acquired. The primary and proposed prototype plans are calculated with the derived formula and effectiveness of the suggested methods is studied and by this way a typical proposed prototype of FGVs is presented. Results of this paper help shipbuilders to make vessels as stealthy as possible against radars. Also these results help RCS specialists & researchers to apply a novel scattering formulation in their research activities.