In recent years, underwater robotics has become very important because it can be applied to various fields such as underwater exploration, underwater inspection, marine industry, and environmental monitoring. Fin plays an essential role in the movement of underwater robots, providing operation, control, and efficient propulsion. This research aims to design and develop a unique robotic fin for underwater robots to improve their handling and propulsion efficiency. The goal is to improve the power density and propulsion efficiency of underwater survey robots. The study is based on a comprehensive analysis of experience and a performance evaluation. Five types of tail fin models were used in the study. The experimental results showed that the performance of the fin design can be compared with existing configurations under different conditions. The best design parameters will be determined by analyzing the experimental results. The results of this study will contribute to underwater robotics by providing a concept of the principles of fin design and its impact on the performance of robotics.

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