An unmanned surface vehicle(USV) for the purpose of long-time and wide-area oceanographic observation was studied. In this study, the development of real-time marine weather observation system and energy harvesting module for exploration of long time was studied. The details of the study are described as follows: 1) Development of the marine environment information collection/processing/ transmission module - Development of DAQ system for oceanographic observation - Development of algorithm for the moving oceanographic observation - Development of a remote-controlled visual monitoring and DB system 2) Development of energy recovery module for power source of marine drone - Optimal design/production of solar energy generation - Development of Battery Management System for the battery charge/ discharge and stabilization (BMS) - Develop of Power Management System for power control of marine drone (PMS) 3) Development of USV - hull linear design and production for Energy efficiency/stability - Development of autonomous driving and Dynamic Positioning System for the performable mission of oceanographic observation 4) Development of navigation algorithm - Navigation control algorithm, Composition of auto-pilot simulator 5) Performance test of the developed USV and control system