Tidal energy usage is continuously increasing among the countries, it offers the availability of renewable energy which is predictable and emits less amount of Greenhouse gases compared to the Thermal power plants and Diesel power plants. Speaking about India itself, Gulf of Khambhat has the potential of producing 5000MW of power. As we know the density of water is higher compared to air, which means a larger amount of Drag force will act directly on the blades of turbine and if we use the same capacity of turbine that of air in water the results will be promising with increased power generation on negligible primary cost. The aim of this project is to design a blade with combination of airfoils and to analyze. We will overcome the situation by decreasing the length of turbine blade and selecting proper hydrofoils, thus decreasing the risk of fatigue failure.