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CM Hammar

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How the CM Hammar AB H20 Set the Standard in Liferaft Safety When CM Hammar introduced the H20 hydrostatic release unit (HRU) in 1985, it changed the game. Built for simplicity, reliability, and zero required maintenance, the H20 quickly became the go-to solution for automatic liferaft deployment – and still is. Why has it become the industry standard?

✔️ Activates automatically at 1.5–4 meters depth

✔️ No service or maintenance required for 2 years

✔️ Corrosion-resistant materials

✔️ Operates even if the vessel capsizes

✔️ Fully approved: SOLAS, USCG, MED

✔️ Over 3 million units in use worldwide Nearly 40 years later, the H20 is still leading the way. Datrex, Inc. was proud to be CM Hammar’s first U.S. distributor, and we remain one of their largest global partners today. It’s a partnership built on trust, technical excellence, and a shared goal: saving lives at sea. Innovations like this don’t just last – they define safety for generations.