The Hammar H20 is widely used for Emergency Position Indicating Radio Beacons (EPIRB). 50% of the worlds EPIRB manufacturers are using the Hammar H20 for the free float function. Should the vessel sink, the Hammar H20, which is activated by increasing water pressure, automatically release the EPIRB. On reaching the surface the EPIRB starts to emit a signal of identification and position to a satellite. Instead of the rope sling a specially developed plastic bolt secures the radio beacon and will be cut when the unit is activated