Engineers involved with the design of naval vessels are coming under growing pressure to consider environmental sustainability as an important part of the design process. To this end, the FESW design concept for 2035 was developed by the NDP Team. This made use of many novel technologies in order to reduce the vessel's environmental impact. The project demonstrates the feasibility of such a design, and how future naval ships can continue to operate effectively whilst being environmentally sustainable. A realistic balance was achieved between the innovative use of existing design ideas and futuristic new technologies. It is hoped that this concept will help to shift the spotlight onto naval ship sustainability and demonstrate the possibilities of new and emerging technologies in propulsion, materials and the powering of maritime vessels.