All NATO navies are facing the challenge of meeting current and future operational requirements while reducing procurement and life cycle cost of naval platform. To this regard, the Italian Navy (IT Navy) has adopted, over the last years, new design concepts in order to maximize operational flexibility for future needs by an extensive use of modularity features on its platforms. During 2016 through 2017, the activities performed in the NATO Mission Modularity Specialist Team, NATO Total Ship System Engineering Specialist Team and in the procurement activities for the Italian Navy Multirole Patrol Vessel project, allowed to define a collaborative multi-disciplinary team between Italian Navy and Italian companies (Fincantieri) in order to identity and develop an exploratory approach for assessing the capabilities and functionality features of newly designed mission bays. This paper aims at underlining the IT Navy innovative approach to procure more effective and affordable naval units, through a deep insight on the whole-warship design impact of Mission Bays and standardized modular areas, aiming at the maximum versatility of operational use of its military ships.