HAMMAR HYDROSTATIC RELEASE UNIT The best-selling hydrostatic release unit in the world, saving lives on the oceans for more than 30 years. It’s safe, reliable and simple design, has earned it more worldwide approvals than any other unit. Should your vessel sink, the Hammar H20, which is activated by increasing water pressure, will automatically release liferafts and EPIRBs. FEATURES • Will release the liferaft when water pressure reaches a depth of 1.5 to 4.0m • Designed with a 2 year service life • No annual servicing or maintenance required • Designed for liferafts from 4 up to 150 person