In 2050, the golden ecosystem, a unique partnership between the Dutch MoD, knowledge institutes and industry, has designed the next generation fleet for the future. At the core lies a novel Mission and Model Based Systems Engineering approach. This enables a wide array of partners to work together in a singular, model based, digital environment to design, optimize, detail and specify an operationally effective future fleet of manned Flexships and autonomous UxV’s. This M&MBSE approach has proven to be key to faster development and delivery of this fleet.