The Ambulance Drone and Defikopter, for example, are used for transporting defibrillators to those in need. Now, Project Ryptide plans to use drones to deliver life-rings to swimmers in distress.

Unlike the similar Pars aerial robot, the Ryptide is not actually a drone itself. It's an attachment designed to be installed on a drone and carry a folded, inflatable life-ring. When the drone has been flown to a location above the distressed swimmer, a button on the drone controller can be pressed to remotely release the life-ring. When the life-ring hits the water, a salt tablet dissolves allowing a spring pin to pierce a CO2 cartridge and the life-ring to inflate in about 3 seconds.