This study aims to design a solar panel boat with the most valuable functions and roles for diving and research activities. Furthermore, studies on its design and construction are often simulated in several stages, starting from data collection on the boat instrument, followed by an analysis of the model. The payload was then calculated using the long-term forecasting method by predicting the load of solar panels and primary equipment placed in the dive boat. The estimated speed and battery storage capacity were also assessed to obtain the principal dimensions. The design of this tourist diving boat used twin hulls (catamarans) to increase the ship's water draft. The deck of the vessel incorporated transparent glass, and it was equipped with safety equipment that allows passengers to observe coral reefs. The vessel has a height, width, and length of 0.665, 2, and 7 meters, respectively. It was also outfitted with a 20-horsepower electric engine capable of attaining a speed of 9 knots, which is suitable for sailing to ecotourism regions. Furthermore, a batteryoperated device supplemented using a solar panel with a peak power output of 2,960 watts was installed.