ARH1E Hydrostatic Release Unit for ARH100 and ARH1

The ARH1E hydrostatic release unit, also known as the HR1E, is a critical safety component designed by Ocean Signal in the UK. It is used with Category 1 automatic-drop EPIRB distress beacons to ensure their deployment when the vessel is submerged.

Its primary role is to automatically release the EPIRB beacon from its mounting bracket when the vessel sinks. This release allows the beacon to float freely on the water's surface and transmit its distress signal to rescue services, thereby increasing the chances of a rapid intervention.

The ARH1E release unit is designed to trigger under hydrostatic pressure. It activates automatically and releases the EPIRB beacon when submerged to a water depth between 1.5 and 4 meters.

The ARH1E hydrostatic release unit is compatible with several Ocean Signal EPIRB beacon models, including the E100, E100G, EPIRB1 Pro, EPIRB2 Pro, and EPIRB3 Pro. It is specifically designed as a replacement part for these beacons.

The ARH1E hydrostatic release unit is compatible with Ocean Signal’s ARH100 and ARH1 automatic release housings. These housings are required for proper installation and operation of your EPIRB beacon’s automatic release system.

To maintain compliance with maritime safety standards and ensure system reliability, the ARH1E hydrostatic release unit must be replaced every two years. This requirement applies to Category 1 automatic-drop beacon mounts.

This hydrostatic release unit is certified to MED (Marine Equipment Directive) and SOLAS (Safety of Life at Sea) standards. These certifications confirm compliance with rigorous international maritime safety regulations.

The ARH1E hydrostatic release unit is designed by Ocean Signal in the UK, ensuring design and manufacturing meet maritime industry standards.

The approximate weight of the ARH1E hydrostatic release unit is 0.45 kg (1 lb).

The official part number for this hydrostatic release unit is 701S-00608. It is also sometimes referred to as the HR1E.

The ARH1E hydrostatic release unit is specifically designed and certified for use with Ocean Signal EPIRB beacons and automatic release housings as listed. Use with other brands is not recommended and may compromise compliance and system performance.

Biennial replacement is critical because the hydrostatic mechanism can degrade over time and exposure to marine elements, even when not activated. Regular replacement ensures the device will function correctly in an emergency, maintaining safety at sea and SOLAS compliance.

No, the ARH1E hydrostatic release unit requires no electrical power. Its triggering mechanism is entirely mechanical and operates via hydrostatic water pressure, making it self-sufficient and reliable under all conditions.

A Category 1 EPIRB beacon is designed to deploy automatically when the vessel is submerged via a hydrostatic release unit such as the ARH1E. A Category 2 beacon is designed to be deployed manually by the crew. The ARH1E is specifically for Category 1 systems.

MED (Marine Equipment Directive) is a European directive ensuring marine equipment meets stringent safety and performance standards. SOLAS (Safety of Life at Sea) is an international convention establishing minimum safety standards for ship construction, equipment, and operation. The ARH1E release unit complies with both standards, ensuring reliability.

Installing the ARH1E hydrostatic release unit involves attaching it to the automatic release housing (ARH100 or ARH1) of your Category 1 EPIRB beacon. While the process is designed to be straightforward, it is recommended to follow the product instructions closely and, if necessary, consult a qualified professional to ensure correct and standards-compliant installation.

No, the ARH1E hydrostatic release unit is a single-use device. Once it has activated to release an EPIRB beacon, it must be replaced with a new unit to ensure the automatic release system remains fully functional.

The ARH100 and ARH1 housings are automatic release enclosures that house the EPIRB beacon. The ARH1E hydrostatic release unit is integrated into these housings. It serves as the release mechanism that, under hydrostatic pressure, opens the housing to allow the beacon to float free and activate.

Beyond the mandatory replacement every two years, the ARH1E hydrostatic release unit does not require specific user maintenance. It is recommended to ensure the automatic release housing remains clean and free of obstructions that could impede beacon deployment.

The ARH1E hydrostatic release unit is both an essential accessory for Category 1 automatic-release EPIRB beacons and a spare part. It is required for initial system operation and must be periodically replaced to maintain compliance and safety.