Abstract-This paper introduces recent activities associated with the development of a new long duration solar powered autonomous surface vehicle (ASV) known as the Ocean Atmosphere Sensor Integration System (OASIS).A brief discussion of ASV applications, platform research and development, and challenges is presented. Platform development objectives and the relationship to resulting systems, hull and deck design, and deployment and recovery are highlighted. The paper discusses the development approach, technology, and architecture for the onboard and off-board control systems. A brief chronology of the hardware integration and on water checkout is also provided. A synopsis of current and future collision avoidance considerations is presented.