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On the 28th, a solar trimaran model with a length of 1.68 meters and a width of 1.1 meters was successfully tested in Harbin. It is understood that this solar trimarine was jointly developed by three college students from the School of Computer Science and Technology of Harbin Engineering University. The ship has advanced technologies such as GPS navigation, automatic obstacle avoidance, remote data transmission, wireless remote control and solar power management. Applicable to environmental monitoring and other functions of rivers and lakes.