There is a great deal of attention being concentrated on reducing the weight of pressure vessels and fuel/oxidizer tanks (tankage) by 10% to 20%. Most efforts are focused at the use of new lighter weight high strength materials to achieve this goal. This author proposes another approach called Hydrostatic Pressure Retainment™ (HPR™) which has the potential of reducing tank weights by nearly 40% while simultaneously increasing safety and design versatility. HPR™ is an original invention of the author and his advisor, and represents a truly novel approach to light weight pressure vessel design. Described herein are the initial steps towards development of this new technology.