Hammar H20 Hydrostatic Release Unit (HRU) – SOLAS Approved (6+ Person Liferafts)

Hammar H20 Hydrostatic Release Unit (HRU) – SOLAS Approved (6+ Person Liferafts)

Essential automatic liferaft release system for offshore safety.
The Hammar H20 HRU ensures your liferaft deploys automatically if your vessel sinks — even if you can’t reach it.

⚓ Why this matters

If a liferaft is lashed to your vessel and you sink, it can go down with the boat.
The Hammar H20 solves this by automatically releasing and deploying your liferaft under water pressure.

✔ No manual action required
✔ Works even if crew are incapacitated
✔ Critical for offshore & commercial compliance

🔧 How it works

• Installed between your liferaft and cradle
• When submerged, water pressure activates the unit
• At approx. 1.5 – 4 metres depth, a blade cuts the securing rope
• Liferaft floats free and inflates automatically
• Weak link breaks, allowing safe boarding

✅ Key Features

• SOLAS approved – meets global maritime safety standards
• Suitable for liferafts from 6 to 150 persons
• Maintenance-free – no servicing required
• Automatic activation – no crew input needed
• Corrosion-resistant construction (reinforced nylon)
• Proven design – used worldwide for over 25 years

📊 Technical Specifications

• Activation depth: 1.5 – 4 metres
• Service life (installed): 2 years
• Shelf life (unused): up to 5 years
• Weak link breaking strength: 2.2 ± 0.4 kN
• Rope strength: min. 15 kN
• Operating temp: -30°C to +65°C

⚠️ Important: Replacement Schedule

This unit is single-use and time-limited.

👉 Must be replaced every 24 months, even if unused

🚢 Who this is for

• Commercial vessels (SOLAS compliance)
• Offshore sailors & passagemakers
• Fishing vessels & workboats
• Anyone using a 6+ person liferaft

📦 What’s included

• Hammar H20 HRU unit
• Weak link + rope assembly
• Installation instructions

💡 Why choose Hammar?

• World’s best-selling HRU
• Trusted across commercial fleets globally
• Simple, fail-safe mechanical design
• No maintenance costs over lifespan