Deck General · Lifeboats & Liferafts
A hydrostatic release unit (HRU) on an inflatable liferaft is designed to automatically release the liferaft when the vessel sinks to a depth of approximately:
- A0.5 to 1 metre
- B1.5 to 4 metres✓ Correct
- C6 to 8 metres
- D10 to 15 metres
Explanation
The HRU is designed to release the liferaft container from its securing straps when submerged to approximately 1.5 to 4 metres, allowing the liferaft to float free and inflate as the vessel sinks.
Authority: SOLAS
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