havospark Hover Ark H3 #robotic#buoy To reduce drowning deaths, speed is critical. The Hover Ark H3 remote controlled lifesaving buoy can rush to the victim at a maximum speed of 18km/h, which is already times faster than 50m or 100m freestyle swimming world... moreHover Ark H3 #robotic#buoy To reduce drowning deaths, speed is critical. The Hover Ark H3 remote controlled lifesaving buoy can rush to the victim at a maximum speed of 18km/h, which is already times faster than 50m or 100m freestyle swimming world champions. It also retains a speed of approximately 7km/h when carrying the person on its back. https://www.havospark.com/products/hover-ark-h3-remote-controlled-lifesaving-buoy/less