Hydrostatic Release Unit (HRU) | Rigging and Operation

Hydrostatic Release Units (HRUs) allow your liferafts to launch automatically should your vessel sink. They only work if they are fitted correctly.
A correctly fitted hydrostatic release unit (HRU) will also allow you to quickly launch liferafts manually in an emergency using the senhouse slip.
This video will show you the principles of fitting a hydrostatic release units (HRUs) correctly as well as their internal operation. Understanding how hyrdostatic releases work helps you to fit them correctly and, ultimately, to keep yourself safe on the water.
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[@gehteuchnixan69]

I have absolutely no interest in boats or sailing whatsoever, but I love your videos. Very insightful, thanks

[@sed6]

Saved for someday when I own a yacht!

[@philippconner2818]

The HRU is critical. I used to work in the commercial fishery and there were many stories of fisherment who cabled or even CHAINED down their raft only for later the raft to go down with the boat. Knowing how to properly set up the hydro is a true lifesaver!

[@OttoTheWeim]

I was responsible for certifying and testing one of these designs for USCG certification. I had to design and build a salt spray chamber, freeze chamber with liquid nitrogen and test them and measure corrosion and operation after each test. Was a really fun project. The ones I tested were the Thanner serviceable units for NATO.

[@TheVanuPhantom]

Could we get a video on how the inflation mechanisms of rafts work?

[@Mr3344555]

I don't study or even touch water, but the knowledge you're putting out is the reason why old people say wow, youtube and the internet would've made me a millionaire in my day. Thank you for the knowledge dear friend, YOU ARE a master teacher. I have my brother who's 6 with me (I'm 21) and I always make him watch videos like this for a bribe and your channel is easy for him to understand and follow along. Thank you, keep up the outstanding work, and keep on smooth sailing :) a like is headed your way, so is another comment to boost your stats. I'd be an inferior man if I can't help the man who's expanding my knowledge!

[@user-xw1ll9ld1z]

i am a cadet i would like to take the time and thank you for your videos , it's crazy how much knowledge i acquired from you.

[@csjrogerson2377]

Many years ago I took command of a 37m (121ft) motor yacht. All 4 HRUs were incorrectly rigged in different ways. The outgoing captain, who was not around for a handover, was an incompetent fool in dozens of areas.

[@alisterdickson4476]

Excellent explanation as always thank you.

[@docbrown7916]

Thanks, didn't know much bout this, something never on tv docus. Not likely I'll be on the water again but always good to know how stuff works, great ch, very educational.

[@nightw4tchman]

Despite all the safety training I went through with one shipping company, and me being assigned to a life raft over a boat, I never had any of this info given to me, wish I did. Thanks for your content, it's great.

[@stephennelmes2537]

Why am I watching this ? I'm on leave. This is work.

[@tihspidtherekciltilc5469]

These videos are addicting and way better than what a television can deliver or an expensive education.

[@TracyA123]

Wow! That's some scary stuff. Seems idiot proof but people still mess up securing them properly. You'd think if your life depended on it you would triple check that it was properly done.

[@347Jimmy]

Such a simple and effective design, superb engineering

[@chauhanakash7]

finally one video which clears all my doubts by explaining it beautifully.. thanks

[@notjebbutstillakerbal]

This is INTEGRAL, AND THE DIFFERENCE BETWEEN LIFE AND DEATH.

[@oldmech619]

I have been on boat a bit and always wounded how release system works. Thanks.

[@Steven-dt5nu]

I have learned a lot of interesting info from your channel on maritime stuff.

[@gregaldworth1200]

Do be aware of the water depths your ship/boat is operating in. If the raft's painter length exceeds depth of water, the raft may not inflate after being released by the HRU. You will still need to to manually haul out the remaining painter, finally giving it a sharp tug to cause inflation. Great video, thanks!