Safety > EPIRB Hydrostatic Release Unit
NSR
NSR is a SOLAS/MED Wheelmark approved Hydrostatic Release Unit (HRU) by NSR, engineered to automatically release Category 1 float-free EPIRB brackets at water depths between 1.5 and 4.0 meters.
Product
NSR
NSR is a SOLAS/MED Wheelmark approved Hydrostatic Release Unit (HRU) by NSR, engineered to automatically release Category 1 float-free EPIRB brackets at water depths between 1.5 and 4.0 meters.
The NSR Hydrostatic Release Unit from NSR is a critical SOLAS GMDSS safety component designed for Category 1 float-free EPIRB enclosures. Should a vessel sink, water pressure between 1.5m and 4.0m depth activates the hydrostatic membrane/cutting mechanism, releasing the EPIRB so it floats freely to the surface and tran…
SOLAS & MED Wheelmark Approved
Certified under IMO SOLAS GMDSS regulations for commercial and passeng…
Automatic Release at 1.5m – 4.0m Depth
Precision hydrostatic activation guarantees release before the vessel …
2-Year Onboard Service Life
Clearly marked expiration date cylinders/plates for straightforward Ra…
Corrosion-Proof Marine Materials
Constructed from UV-stabilized polymers and marine-grade stainless ste…
Fast Inspection & Replacement
Includes replacement bolt/pin hardware for quick biennial maintenance.
Key Features
Key Features & Operational Capabilities
Engineered by NSR for professional maritime reliability, compliance, and seamless shipboard integration.
- SOLAS & MED Wheelmark Approved
- Automatic Release at 1.5m – 4.0m Depth
- 2-Year Onboard Service Life
- Corrosion-Proof Marine Materials
- Fast Inspection & Replacement
Where It Is Used
Maritime Applications & Vessel Types
Discover how the NSR supports critical operations across commercial fleets, workboats, and leisure vessels.
Technical Specifications
At a Glance
Component Type
EPIRB Hydrostatic Release Unit (HRU)
Release Depth
1.5 to 4.0 Meters Seawater Depth
Operating Temp
-30°C to +65°C
Service Interval
2 Years from Date of Onboard Installation
Compatibility
NSR Category 1 Float-Free EPIRB Enclosures
Standards
IMO SOLAS IV, MSC.471(101), IEC 61097-2
Certification
MED Wheelmark Approved
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