How do lifeboats self-right?

Every lifeboat in the RNLI’s all-weather fleet has the capability to self-right: the Shannon class, the Tamar class, the Severn class, the Trent class, and the Mersey class. The D class also self-rights.
In other words, if a mighty wave throws one of those lifeboat sideways, or a full 180 degrees upside down, the lifeboat can bring itself the right way up again - and the crew can carry on with their mission to bring someone back to safety.
Let's find out how it all works 👇
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The RNLI is the charity that saves lives at sea. 24 hours a day, 365 days a year, lifeboat crews around the UK and Ireland are ready to launch to help those in need. Whether you're stuck on a sinking ship, cut off by a rapidly rising tide, or in the water and close to drowning, RNLI crew members will drop everything to come to your rescue. 95% of RNLI lifeboat crews and station staff are volunteers.
But it’s not just lifeboats. RNLI lifeguards patrol 248 beaches across the UK and Channel Islands, keeping people safe, providing safety advice and rescuing those in trouble. Education volunteers visit schools and swimming clubs to help teach the next generation how to enjoy the water safely. And volunteer fundraisers and shop workers give up their time to generate vital funds. The RNLI is also working to help communities around the world that are most at risk of drowning.
If you spot someone in trouble in the water, call 999 or 112 and ask for the coastguard.
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Royal National Lifeboat Institution (RNLI), a charity registered in England and Wales (209603), Scotland (SC037736), the Republic of Ireland (20003326), the Bailiwick of Jersey (14), the Isle of Man, the Bailiwick of Guernsey and Alderney of West Quay Road, Poole, Dorset BH15 1HZ

[@mairead5891]

So clever! Crew safety is paramount.

[@rnli]

It absolutely it Mairead 😊

[@Stan7670]

Thanks for that explanation. I'd like to add that the watertight crew compartment does not work alone in righting the boat. The mass of the boat below the waterline acts as a gravitational counterweight to the compartment to pivot the boat.

[@paulinejackson8105]

I'm glad lifeboats can self right considering they sometimes have to go out in very bad weather, it's a life saver

[@rnli]

It absolutely is Pauline!

[@dellthegamer]

I learning to swim in the hope that one day I can join the rnli

[@rnli]

💛

[@rcblitzfpv8346]

I’d love to be part of the rnli but can’t swim haha do love kayaking tho

[@rnli]

That's totally fair! Glad you enjoy kayaking though. Enjoy and stay safe 💙

[@samkwan7035]

I have a question. Why is the radar required not spinning?