The Hammar H20YSE HRU is a premium, SOLAS-compliant hydrostatic release unit engineered to automatically free life-saving appliances when disaster strikes at sea. With patented J.G. Type Approval No. 3682 and full compliance with SOLAS 74/96 and GMDSS standards, this compact yet robust unit ensures that your EPIRB, liferaft, or other float-free device will separate from the sinking vessel at the correct depth—delivering critical float-free functionality even in the most unforgiving marine environments.
Key Features & Benefits Release depth calibrated to 2.0–4.0 m, ensuring reliable activation under realistic sinking conditions. Lightweight construction at just 240 g, making installation easier and reducing deck loading. Patented J.G. Type Approval No. 3682—trusted and recognized by international authorities. Designed and manufactured in Sweden under rigorous quality standards. Reference number: Hammar Ref. 8751. Completely disposable, with no annual servicing required—just replace the unit per manufacturer’s expiry schedule.
Compliance & Certification StandardDetailsSOLAS 74/96Meets regulations for float-free liferaft and EPIRB release devices under the Life-Saving Appliances (LSA) Code.GMDSS P83410/1411Certified for use as a free-float EPIRB release mechanism in Global Maritime Distress and Safety System installations.J.G. Type Approval No. 3682Demonstrates conformity to recognized hydrostatic release testing and construction standards. This HRU has been tested to activate reliably at depths of 2 to 4 meters and withstands harsh saltwater environments, temperature extremes, and mechanical stress typical of offshore and ocean-going service. 🛠 Why Choose the Hammar H20YSE HRU? Marine professionals demand safety equipment that performs when lives depend on it. The Hammar H20YSE stands out for its combination of precision engineering, tested reliability, and ease of maintenance. Its activation depth is finely tuned to standard liferaft and EPIRB configurations, while its lightweight and corrosion-resistant materials reduce installation effort and long-term risk. Unlike reusable units that require annual inspection and parts replacement, the H20YSE is designed to be installed, forgotten, and replaced once its service life expires—minimizing downtime and ensuring that safety readiness is never compromised. Hammar’s reputation for HRUs “saving lives at sea for more than 30 years” underscores this product’s pedigree and trustworthiness.
Installation & Replacement Notes Install on a secure liferaft cradle or EPIRB mounting bracket using only the approved release bolt specified by the EPIRB or raft manufacturer. Mark the installation date clearly on the unit label—you’ll typically replace it every 24 or 30 months depending on operational exposure and manufacturer guidance.
Store the HRU in a dry, UV-protected environment prior to installation, and avoid exposure to high-pressure washing or heavy mechanical shocks.
Ensure your vessel meets SOLAS/LSA and GMDSS float-free requirements with the Hammar H20YSE Marine HRU. Contact us today to request a quote, verify compatibility with your EPIRB or liferaft model, or place an order. Install once, trust forever—because when seconds count, automatic release can make all the difference.