Abstract
Oceans cover more than 70% of the earth's surface and their space is 300 times larger than the space on land, and, ocean resources such as methane hydrate and cobalt rich crust exist in deep ocean. As the tools to access the deep ocean, underwater robots attract high attention, and it is important to give young generation motivations to underwater technologies. So that we are working on the outreach activities related underwater technologies through underwater competitions. In this paper, we introduce a small ROV (Remotely Operated Vehicle) and robot system using a graphical programing language MATLAB/Simulink.