https://spc.jst.go.jp/news/240103/topic_5_03.html
A next-generation water rescue robot “Dolphin 3” was donated to seven rescue organizations, including the Guangdong Provincial Red Cross Society.
The maximum towing capacity is up to one ton, and it can also power a boat in an emergency. The actual measured speed is 7 meters per second. It automatically turns on and prepares itself by simply being thrown into the water in the event of an accident, allowing the boat to be immediately ready for rescue, saving valuable rescue time. In addition, two antennas provide second-by-second positioning and directional measurements the moment the device is thrown into the water, providing accurate navigation for rescue operations.
A smart water rescue robot “Dolphin-3”