How does a self inflating life raft work?

What is a self inflating life raft used for?

The inflatable life raft is essential survival equipment, which is used for emergency escaping from dangerous areas or evacuating from the wrecked ships. An inflatable life raft is a type of life raft which allows people to fold and store it when not in use, or inflate it at the time of an emergency.

How does a HRU work?

A HRU uses water pressure to activate a spring-loaded blade, cutting through liferaft securing straps. As the raft floats upwards, it automatically inflates when the painter pulls tight. Additional buoyancy from the inflated raft then breaks the “weak link”, releasing the raft from the vessel.

What is the purpose of the life raft hydrostatic release?

A hydrostatic release unit or HRU is a pressure activated mechanism designed, to automatically deploy a life raft, when certain conditions are met. In case a vessel sinks, the HRU will activate and release the life raft on a depth between 1,5 and 4 meters.

How often do life rafts need to be serviced?

The manufacturer of your life raft does have a recommended service interval. Today the most common is every three (3) years although there are still rafts which annual servicing is recommended. I am not aware of any manufacturer with a recommended interval longer than three (3) years.

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How long can you survive in a life raft?

Life rafts can help you survive for as many as five days, assuming dehydration doesn’t kill you first.

What is the minimum capacity of life raft?

A liferaft with a carrying capacity of less than six people can not be allowed to transport people. If the liferaft should not be launched by a launching device, then the mass of the life raft, its container and its equipment should not be more than 185 kg.