How Stabilisers Reduce A Ship's Roll

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Stabilisers are used to reduce the amount of roll experienced by large ships.
In this video, we look at a few different stabilisation techniques. We investigate how different methods work and how successful they are at reducing a roll.
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[@CasualNavigation]

Thanks again for the amazing response to this video. Just to clarify a few things that have come up a lot in the comments. The centre of gravity and the centre of buoyancy are the correct way round in this video. Check out one of my earlier videos too see how it works: kzbin.info/www/bejne/eoG5kImgr7psoac The stabilisers are a little confusing in the animation. They do twist rather than flap up and down. I struggled to animate the twisting motion when viewed from ahead so exaggerated the up and down element instead. Apologies for any confusion caused.

[@ianmcshane9664]

Wow lot of text

[@portmanteau.]

Just add real life photos or videos next time.

[@Tony-.]

No-no-no, it's thank You for intelligible illustration

[@GrzegorzDurda]

Id bet that if the stabilizer fin was twice the length it would operate at half the minimum speed. In the end it's just a wing and identical in function to an airplane's. It's the same fluid dynamics.

[@vsarritz]

Thanks for the great video! If I may point out a very minor omission though, I think gyroscopic stabilisers deserved a mention. Albeit now mainly used in yachts, enormous gyroscopes were in fact installed on the transatlantic liner ‘Conte di Savoia’ in 1932.

[@Orygoldminecraft]

Thank you, i was having trouble stabilising my cruise ship in rough waters

[@calebprouty288]

Yahya. M. Everyday problems am I right

[@gfries4906]

@@calebprouty288 yeah bro i just hate it when im piloting my cruise ship and it starts shifting everywhere man

[@stew3b]

Yeah bro,I hate it when my cruise ship capsizes and sinks

[@KillMxrgue]

Yea man I'm drunk asf sailing my big ass ship and my boat flips and I fall in the ocean ya know like we all can relate now I got my stabilizers I'm totally not tired asf and trying to find nun to fall asleep to

[@cd2048hfkdndj]

Just another everyday situation right😂

[@loonari2476]

We need human stabalizers for drunk people, underrated channel

[@BrianYYH]

Lol alcohol turns people's stabilizers off

[@johnrickard8512]

Drunk people on a cruise ship? nooooo

[@welshpete12]

Yep , fit them with giros !

[@iamf6641]

gravity does not exist

[@TheJere213]

People have integrated stabilizers but some choose to disable them momentarily with alcohol ;)

[@Unformed8]

Oh no... Not one of these channels, where my life has nothing to do with it even remotely but videos are fascinating enough I just keep watching...

[@flitsertheo]

In my life on the other hand I can remember my last "ride" on the North Sea with those stabilizers at work. Little foaming waves you didn't even see, though seemingly the ship's stabilizers had problems with those. Result, the ship rolling heavily from one side to another, each time being abruptly stopped in its roll by the stabilizers . Very unpleasant. In the souvenir the floor was littered with items which had flown from the shelves and a fridge on wheels was rolling freely through the restaurant. We arrived with a 4 hours delay.

[@paulwilhelmsen6586]

I watch so many educational videos on subjects that have no relation to my life it’s almost funny. A ‘for instance’ I live in Utah in the USA, one of the driest places in the country, I’ve never even touched the controls of a boat, but still this video has gotten me thinking about how these systems work; also fluid dynamics apply to air, and boy do we have plenty of room to fly things here :). I wonder if any form of passive control could be created for air flight stabilization from wind ....? Great video! I love learning from creators like this, those who even if they are very understated in their tone, clearly convey the breadth of knowledge they carry.

[@AGENT47ist]

At my Navy school we do a lesson called "Stability", it full of calculations but in theory this video is a pretty good presentation of how a ship rolls and how the stability is calculatesd. Well done on the images

[@ericparrish1515]

Scrapping a ship and a cell tower if this huge depression continues much longer. Not down with the screw crew but it looks amazing. Let my heart go on jack

[@sakiv9275]

This is very simple presentation of most difficult subject.

[@radjared]

I think it could of been simpler

[@EatMyYeeties]

@@radjared could have***

[@scottwhitley3392]

J Magnums ships stability is a very hard and long subject, this video barely scratches the surface

[@bubbles7608]

K Blocks K Blocks its 2019. Why do you continue to use faggot as a insult

[@RB-mm7ce]

@@bubbles7608 cause it's disgusting

[@VSO_Gun_Channel]

Learning has occurred

[@notalemon2899]

-100 respect for not getting verified

[@sofloflow]

Funny seeing you here

[@umarmars47]

Gyro for MG recoil. Idea.

[@dragon.fromindia3235]

Buy silver than crypto currency buy silver silver nitrate is used in rocket fuels and pharma industry

[@ericcartman65378]

Hello Mr Checkmark

[@lucliebelin7416]

There's one system you have forgotten to talk about. In the big military ships, mostly the aircraft carriers, there's an active stability system also, and it must be very effective for the planes to land safely, even in rough weather. Inside the hull, between the center of buoyancy and the centre of gravity, there's two sets of rails going perpendicularly from the center axis, side to side. On these rails, there's one big mass which is moved by computers in the opposite direction of the waves.

[@GamesFromSpace]

That's functionally the same as the water pumping stabilizers. Just moving mass around inside the ship.

[@chilfang2422]

tall buildings have those too!

[@junovzla]

@@chilfang2422 Tall Buildings generally use the mass dampener tho, which is just a very big ball of something heavy hanging on pistons, so that when the top of the building moves the mass is used to pull the building in the other direction. The Burj Khalifa notably lacks this, and instead uses its spiral shape to redirect windflow so it doesn't really swing a lot anyway (of course this would be a disadvantage in an earthquake)

[@apropercuppa8612]

I once took a trip with my family from England to Ireland and we caught a Ferry from Holyhead across the Irish Sea to Dublin. The sea was that rough that one of the ships stabilisers had completely broken. The Captain struggled to stabilise the vessel and couldn't arrive into the Port. It was at that point that he announced he had to turn back. What should have been a few hours crossing turned into something daft like a 4-6 hour trip. Partly because of how rough it actually was, was why it took so long, and obviously the technical difficulties of handling a ship that might not be responding well, lol. Lucky for us, we all took travel sickness tablets first because near enough everyone was sea sick. The toilets and troughs were filled with spew. A great memory for sure.

[@sayethwe8683]

the noise at 1:15 is glorious

[@samuelmatheson9655]

Container ship be like "Queef noises"

[@scortexfire]

*Fat fart.*

[@thisguy9042]

@@scortexfire wet fart😁

[@downfromthereeefters]

After a long night of whiskey and taco bell

[@imwavyyy9910]

😂😂😂😂😂😂😂😂😂🌝

[@Scji2]

This is a myth, stabilisers are in fact a lot of fat people (called Stabilons) on the ship who run from side to side, this is very well hidden as they do it underneath the deck. I would know, I was a Stabilon, they force fed us to keep us fat from all the running 😔

[@ronjose51]

Feyo Marseille dream job free food and travel

[@ASunnyWorld]

I heard your mother alone was enough to stabilize the biggest ship in the world

[@hobbyhermit66]

I read about your plight in Reader's Digest. Must have been horrible.

[@Scji2]

Fred Lamb thanks for your condolences

[@Scji2]

Vevey women weren’t allowed to work on the ship, bare in mind these were olden times

[@maelstrumyes3595]

Thanks I really needed this info for my 3 month journey from Norway to Iceland In 105 A.D

[@NoobMicesters]

Maelstrum yes 105 A.D?

[@Fred_the_1996]

@@NoobMicesters yos

[@billmcgee7]

Maelstrum yes You are the human that rules !! Take us all back to your home planet !!!!

[@dragon.fromindia3235]

Buy silver than crypto currency buy silver silver nitrate is used in rocket fuels and pharma industry

[@daciamcv1026]

The fin stabilisers were first used on royal navy missile ships in the 1960's they were used to hold the ship steady while it launched it missiles one of the first non navy ships that had this system was the Royal Yacht Britannia . I was an electronic wireman working for Muirheads of Beckenham and I wired the control box for this Yacht

[@justADeni]

nice

[@timetraveler_0]

Is this Reddit?

[@TonyyStarrkk1994]

That’s amazing, thanks for sharing your knowledge and experience. You must have seen and done so much. You should make a video about your experiences.

[@bruceeanandd1933]

Thanks for your sharing knowledge

[@captnodge]

Cor

[@GothicHellhound]

I'm gonna be honest, your stuff was randomly in my feed and I just went. 🤷‍♀️ why not and now I'm just watching a lot of your vids

[@pepelepew2724]

Ha! Me too.

[@fhpurcell7713]

Hey I really like your profile pic :)

[@Oakleaf700]

Me too!

[@pachamama8586]

Same here.

[@dancingtrout6719]

thats good your going with the Flow...chuckle

[@dwafakiin1792]

I've been looking for a video like this for ages, I play a game called Stormworks, where you build ships and such for search and rescue operations, but some of the ships can get to a decent size, and as in the name of the game, you encounter storms, so it can be rather difficult to keep your ship upright during a heavy storm which is often when you need to use these rescue ships. Thank you for the video, it's been really helpful!

[@Neon_Orange56]

i also play that game its pretty fun

[@Slash0mega]

wait, are the game physics good enough that these things help?

[@dixie_rekd9601]

have you played "from the depths"

[@dwafakiin1792]

@@dixie_rekd9601 I have actually, got around 1000 hours on it 😂 its a fantastic game!

[@smakkacowtherealone]

ayy I love that game

[@jeff4son]

I was on the QM2 from NY to Southampton in May 2009. There were 30ft waves in a storm. I was amazed at how stable the ship stayed.

[@joshuasim8019]

Question. Any chance that all these stabilizers are installed together in one ship and work coherently? That would be glorious!

[@joeyknight8272]

to expensive and too much space

[@snazzysnazzergryphon8550]

@@joeyknight8272 but It could probably be done

[@only1anime89]

I wanna see a floating city. That would be awesome!

[@daftbence]

I present you the Queen Mary 2! It has fins, tanks, active fins, everything you need. Works quite well, although there are still waves that can rock the old lady :)

[@mirum8726]

userful1 😮

[@shanerooney7288]

I don't remember when I found this channel, or really anything about this channel. So this video came as a very pleasant surprise.

[@NolePTR]

Same here man.

[@mateuszkrakowiak389]

It's 3AM, and I'm watching this... I love KZbin so much, interesting things and knowledge served everyday

[@yubear420]

My Chief Engineer always told me, "You put the right fin in, you put the right fin out. In, out, in, out shake it all about and then you do the hokey pokey and you turn around. That's what it's all about."

[@leosypher9993]

My grandfather served on an iron ore ship on the great lakes, they were in one of the storms that lake superior is famous for, they were stuck crossways in the waves for half an hour, my grandpa states "I was standing in my bunck one second, then doing a head stand the other" the rudder on the ship was trying to steer the ship to be going into the waves, it took that half hour for the rudder to finally get the ship steered

[@hardboiled7467]

Rejoice! for the mighty youtube algorithm has found yee

[@Frederickthegreat425]

It is salvation

[@loder6179]

"and there was much rejoicing"

[@samutraifin]

Me: looking ideas for a PC setup/desk KZbin: wanna see some ship Stabilisers?

[@Helix597]

Niko Lindroos happened to me too I’m looking for new GPUs and instead of my usual pc and military notifications I get recommended guy throws car at wall

[@alberteng123]

Same here

[@hairyhenry97]

KZbin

[@devvydoesstuff]

Same but i was looking for sinking ships not how to stop a ship from sinking

[@justanotherasian4395]

Just get an IKEA linnmon desk.

[@chrisakaschulbus4903]

1:04 why is there a blurr in the video? What kind of stuff do you draw on your boats? ;)

[@the-ns6df]

Good to know im not the only one who noticed that

[@ieuanhunt552]

Those cheesy sound effects are glorious.

[@skipbellon4342]

On the Fast Frigate I served on, one could feel the stabilizers "kick in" with a slam at the end of each roll. And one time, (in band camp) Our ship broke down out at sea and we could not use our stabilizers... the whole crew was sea-sick (almost) until another ship towed us toward the Philippines, until we were close enough for a fleet tug to tow us the rest of the way. FYI: If you are ever going to break down and sit in a port for 3 months... do it in the Philippines.

[@raideurng2508]

I'd be shocked if the author here hadn't played Stormworks, a game entirely about building functional ships. I had a mate figure out he could use a weight actively rolled on a track positioned in the bottom of the ship to rapidly shift CG and counter rolling. Definitely a personnel safety hazard, but it did work.

[@moldman5694]

A good example of something that works very well in stormworks but would be a mechanical nightmare irl.

[@Kenionatus]

@@moldman5694 We've got the technology for rolling things on tracks quite figured out. The main issue I (as a complete layperson) see is that the area in between the extreme positions needs to remain clear, costing a lot of space.

[@factbeaglesarebest]

I love finding an amazing well produced intriguing video that teaches me something that I never would have searched. Never considered this fact! Amazing video

[@tee4222]

Cool video, glad to have come across your channel! There are actually what’re called zero-speed fin stabilizers that don’t require you to be moving through the water. They have a much wider range of motion and use the fins kind of like wings. Not sure if they employ them on larger vessels though. They’re pretty common on recreational yachts in the 20 to 60 meter range. There is also another method of stabilization not mentioned. But again, i believe they’re only used on smaller vessels. I see them on sport fishing yachts most commonly. They’re called seakeepers and they use gyroscopic stabilization. It would be cool to see a video explaining their function, advantages and limitations.

[@janvandemaas4148]

My Father was a cook aboard a passenger liner that sailed between Rotterdam and New York in the 1950 ‘s . Passengers had been complaining about the rolling of the ship and the decision was made to have stabilising fins fitted to the ship in Southhampton only to find out that they made the ship slowly dip in the water and had to slow the ship down every so often. The trip took a very long time to New York but the problem was rectified in NY. Must have been a Monday morning job !

[@joops110]

5:10 "You can use it to counter other forces" *Like god*

[@GoldSrc_]

As if god was a force lol.

[@joops110]

@@GoldSrc_ Oh my, it's Gordon Freeman! I'm a big fan.

[@lordgaben4983]

@@GoldSrc_ Titanic joke mate

[@GoldSrc_]

@@lordgaben4983 Shit, it's GabeN Better go back to the fridge.

[@JayRSwan]

Not for cruise ships, but there are another 2 types of active stabilizers that also work while stopped. One uses a heavy spinning weight on the center line inside the boat and a gyro to counter the force. The 2nd one is also spinning, but on the outside, like the active fins. Because they are spinning in the water, you don't need to be moving to build counter force.

[@bazza2974]

Your channel is brilliant. Clearly a lot of effort and time goes into creating quality content. Really appreciated. Keep it up!

[@docbrown7916]

I have read of tuned mass dampeners in some vessels and on some cruise ships in bad weather, the captain having a certain % of guests go to lower decks to reduce the center of gravity, they provided food and etc to compensate for inconvenience but it did work, it's all physics and the ocean has a lotta dynamic variables.

[@KoRbA2310]

Saturday Night:... KZbin: Do you want to watch video about ship stabilisers?

[@lukedavies2406]

Eric and the answer better be “hell yes KZbin”

[@RIURIU4]

saturday night for me too, one week later from your comment. Do they actually schedule this video to be suggested on Saturdays

[@paul6894]

Saturday night for me. I found the video interesting.

[@Coonass]

Haha 2 months ahead, it's my Saturday night, my 4th video from the channel, and I just subbed. Niiiice. 🤟🏼✌🏼🇺🇸🦅

[@NiaBaNiaMaNia]

That’s honestly me right now.

[@PatIreland]

Well written. Nice commentaries. Appropriate drawings. Excellent narration.

[@donerkebab97]

This is the third video I watched. Consider me won over and subscribed

[@Cucumberick]

Another youtube channel star is born!

[@johnsegura2139]

Who's here because their cruise ships aren't stable enough?

[@ericparrish1515]

Well, I came for the job myself

[@ScroatBagGarage]

Carnival Magic is one wobbly ship. Been on several not nearly as bad

[@zeevaartschooldocent6367]

I just discovered your channel while searching for a video explaining how stabilisation fins work. I immedialtly subscribed after watching this video as it is simple and clear. Two things that are really appreciated by my students. So your video's have entered the Nautical college. :-) Thank you for making them and keep up the (very) good work.

[@IZokoraI]

Ship: 'They see me rolling, the... wait... they try to dampen my roll!'

[@schizophreniagaming1187]

Me: Does a barrel roll Everyone in the cruise ship:

[@Logosfollower]

Trynna stop me rolling dirtyy

[@aravindj9364]

They dampin'

[@montsemajanmartinez9824]

The best way to avoid spilling drinks on a cruise ship is to lay flat on the floor with a 5cm tube in your mouth attached to a large funnel. There, a trained professional can pour the drink into your mouth without spilling. In case of overage, members of the crew can stow you below decks on a gurney, and roll you back and forth in counteraction to the waves. It's great fun, and passengers & crew enjoy it immensely.

[@atreyoss5050]

The fuck..

[@elsamatamoros9820]

5:05 The ship is growing , it has evolved arms!

[@USN1985dos]

The frigate I was on had active fin stabilizers. They were always broken though, so we would just roll from side to side. On particularly rough days, you'd start to see boot prints on the bulkheads (walls) of passageways. There were times on the bridge, when you were literally hanging on to something bolted down to keep from sliding across the deck, that I wondered if we would finally capsize.

[@corthew]

When I was in the Navy I use to play around with subtle rudder action to stabilize the ship. The idea is simply to counter the wave action with a slight bow turn in the direction of the list. You have to be a bit ahead of it of course so the ship has time to respond but waves are very consistent in their timing so its really all about that...Timing.

[@clayz1]

I know just what you are talking about. Getting the timing right can be very difficult. Especially on an old ww2 tanker converted to crab processor. She comes around slow anyhow, but good timing still has an effect.

[@joseph6270]

ayyyy it's a nautical channel that actually knows what they're talking about, subbed :)

[@adanbrito1325]

Why I'm subbing

[@737Garrus]

I love the funny sound effect used when the unstabilized ship capsized. Makes it obvious and humorous audibly. :P

[@Can_Head]

Going on a cruise later this year and I hate the sea, understanding what I'm going on and how I'm being safe really helps. As apposed to just being told I'm safe with no explanation.

[@naveenraj2008eee]

Amazing video... Your channel is different and interesting... KZbin algorithm will soon endorse you.. Thanks for great video...🙏👍

[@samson_the_great]

NAVEEN RAJ there are alot of channels who do the same thing as him

[@naveenraj2008eee]

@@samson_the_great But i dont know about it...

[@pmmeurcatpics]

Or demonetize it, because KZbin is shit

[@Infection3d]

Already did this week.

[@MrBozo08]

Wait what? I am so suprised by your subscriber count, you deserve much much more. Youre channel is going to blow up in subs very very soon

[@ThisHandleFeatureIsStupid]

What a great explanation! I love it when people do a good job at stuff! I don't care about this subject matter, and yet I found the video enjoyable on all fronts. :)

[@ef8701]

Your videos are really helpful and I have vigorously learnt a lot from you. Thank You !!!!

[@1234567895182]

Your channel is great! Sorry it took so long to find you! Subbed!!

[@JohnsonAugustine]

Great video, well explained!

[@charliefual]

Love that the little ship drawing is the Queen Mary 2.

[@socialminds9894]

What an interesting channel. I hope to watch much more of this content.

[@whitehornet90]

Gained new knowledge today. Thank you ❤

[@saurabhjambotkar9077]

Centre of buoyancy is always above the centre of gravity..... It must have gotten away from your observations... But still couldn't help to notice...... Awesome video.!

[@mygnac]

I think you’re confusing the metacentric point with the centre of buoyancy. The metacentric point must always be above the centre of gravity, yes, but the centre of buoyancy doesn’t. Depends entirely on hull shape

[@saurabhjambotkar9077]

@@mygnac Pieter Elen Yes. Metacenter will always be vertically above center of buoyancy. But at 0:22, CG is above Buoyancy point. That should ensure the rollover of ship.

[@tutracrafty]

​@@saurabhjambotkar9077the ship stays upright due to form stability. The center of gravity is often many meters above the centre of buoyancy.

[@munfTastic69]

how fitting that i discovered your channel after becoming super interested in sailing ships because of my time on a cruise ship (: love the videos!

[@WelcomeToJ]

This was one of the most interesting and informative videos I've ever seen on KZbin.

[@drave4gaming191]

Then you are not looking for it. I don't want to say, this video is bad, I really like it and the channel as well, but if you're looking for more, check out wendover production, half as interesting, real life lore and real engineering, they have very good videos as well.

[@aqimjulayhi8798]

I see you're the sea and water transport version of Wendover Productions. Subbed and looking forward to learn more.

[@lifeinvader2039]

On some superyachts, they use “zero speed” stabiliser which keeps the vessel stable on anchor. Great video.

[@SomewhereAbove]

Your voice is so soothing omg😍

[@andreasholmm]

Cool bro i been on the cruise ship, and didn't even know this

[@T.B.Y.S.]

Wait what? Ships have FINS ? **THE MORE YOU KNOW** Thanks for the infos youre giving, underrated!

[@SportSoulLife]

Yes. One problem with these he didnt mention: they are difficult to maintain and repair since they are underwater. Another problem is that sometimes they are forgotten outside and they might catch a chain of a buoy or smash against the dock. They are only about 5 meters long, but thats enough to snag a buoy chain. It has happened before in tight channels.

[@SportSoulLife]

Simon WoodburyForget Yes, but you gain a little bit of energy from the ship staying its course better so the rudder doesnt have to work as much. But overall you indeed lose energy on those.

[@SportSoulLife]

Simon WoodburyForget Im an officer, have worked 1.5 years on a ropax with exactly these kinds of fins. Its called hydrodynamics, not aerodynamics. So much for understanding something. The waves do change the course of the ship. Even when you allow for much yawing on the autopilot. This is due to the changes on water resistance on each side of the ship due to the roll and the waves. This is the same as if you try to sail straight with a list, you will notice the ship wants to turn in the same direction of the list. This is partly why ropax ferries tend to run the heeling tanks a couple of minutes prior to a sharp turn in shallow waters, towards the direction of the turn, so there is less forces working against the course change. Having used these fins for 1.5 years pretty much every other day, i can inform you that the efficiency isnt greatly affected. What is expensive about them is the service. They dont push the ship deeper into the water, as one fin pushes one side down, the other lifts the other side up simoultaneously. They try to find a balance where they dont use up more energy by lifting or pushing down the entire ship. They monitor the lift and push on each side and balance it out so the forces equal to 0. The fins allow for less rudder movements, that is clealy seen on the indicator, so the increased drag from them creating a forced is partly reduced in the much larger surface area of the main rudders moving less. The way the ship is loaded affects the efficiency far more, so much that the difference in fuel consuption is 30% less if you get the weight of cargo just right. A full on aft trim will reduce the efficiency to an extreme amount, much more than any fin could potentionally do. Take a look at the rudder indicator in strong winds versus large waves, youll see a clear difference. In my sailboat racing days we regularly trained by taking off the rudder completely and only manouvering the boat with our sails to learn to reduce drag by using the rudder, the only time the rudder is used with any kind of force there is in emergency situations or really tight manouvers, so much so that when you do your penalties (turn 360 or 720 degrees in one go) you just give a push of momentum into the hull with the rudder and then completely let it go, doing the rest of the turning with your sails and shifting the centre of gravity with your body weight so you dont lose speed.

[@SportSoulLife]

Simon WoodburyForget windsurfing also doesnt require a rudder, turns pretty damn sharply still. Same goes for sailboats. You can go any direction without a rudder just by manupulating the weight. If you turn the rudder you create more drag, thats why world champion class sailors train without a rudder every now and then. They barely use it when racing. 1% is meaningless compared to everything else that affects the efficiency. If you change the speed from 22 knots to 26 knots on the Ro-Pax i worked on, the fuel consumption goes up about 40%. From 190 kg/nm to 260 kg/nm. The waves by themselves affect it much more than 1%. The difference of using 3 engines instead of 4 engines or vice versa make up for way more than that 1%. Yes, it creates some drag, but its quite irrelevant compared to the other factors. If shipping companies want to sail more economically, they increase the margins of time the ship has to arrive to the next port. This way they can sail at the most economical speed and time currents well. A set of fins in relation to fuel economy is a drop in the ocean to the companies wallet.

[@SportSoulLife]

Simon WoodburyForget So, the fins cost about $296 000, an increase of 3 knots speed costs $7 000 000 annually, if my maths are compltely correct after a 12 hour shift

[@marcosmota1094]

Greater work. You have an awesome announcer's voice.

[@zarakikenpachi9210]

I like how youtube answers the questions i never asked.tq..i appreciated it

[@MrFluffytheTurtle]

You're like the Chain Bear Formula 1 channel of the Nautical Marine Variety. I love these.

[@shreyasnaidu9333]

Awesome 25k sub more in just a day that's good news .....all the best sir .....

[@sathish5011]

This video will be really helpful to many seafarers. Great job team !!!! Expecting the next video very soon.

[@andypeterson2126]

More trivial information I’ll never need yet couldn’t stop watching

[@MaximZharov]

Very nice explaining! Thank you

[@najrenchelf2751]

Alright, you’re good at this... I subscribe to good channels - says everyone ever! 😂 But seriously, well deserved! 😊

[@mariebcfhs9491]

you forgot the HUGE and THICC gyroscope stabilator used in steam ships

[@tee4222]

Marie BCFHS and lots of smaller sport fishing vessels. There’s also zero speed fin stabilizers that actually do flap like wings

[@gnarkani2275]

Never found ships interesting.. until I found your Channel :) Keep it up!

[@chrisholmgren1595]

Hoppe has a good demonstration on Flume tank stabilization. These were used effectively on LASH barge carriers in the 70’s. Good work.

[@aliasofanalias7448]

This knowledge is going straight on my CV.

[@Macedthur]

I like your Animations underrated channel and I subscribed :D

[@tedbaxter5234]

Thanks! I just took my first cruise and I wondered about these systems!

[@twilightstruggle8390]

I am going to study Naval engineering in the university. really enjoy the facts of ships

[@TonyC2328]

Wish we had stabilizers on my Frigate when I was in the Navy. You would nearly fall over sometimes just trying to walk lol

[@Dog-lg5ju]

First! Love your videos by the way, so happy I found this channel

[@CasualNavigation]

Thanks Dog885. Great to have you here

[@dragon.fromindia3235]

Buy silver than crypto currency buy silver silver nitrate is used in rocket fuels and pharma industry....

[@maryseeker7590]

Enjoyed as usual!

[@MichaelMarko]

Very nice! Thanks for the deep dive, so to speak!!!

[@lifethrownoutofthewindow]

Again. I have no use for this. But enjoyed. if you remember me from the last ship weight video :D

[@toyojin]

ah, i swear Norwegian Joy rocked a bit from time to time. Great to learn this lmao

[@RickyJr46]

Interesting! You've explained these systems well.

[@harryt988]

Very interesting and very well presented

[@dwaynekight7381]

The cruise ships only use them in heavier seas, they use up a lot of energy. Its costs more money in fuel. So when it gets so rough, that nobody is leaving their cabins to spend money......then they turn on the stabilizers.

[@PatIreland]

Is this true? I wish the creator of this video would comment on this comment.

[@CasualNavigation]

We used to use them almost all the time. Mainly because if someone injured themselves and the stabilisers weren't out, questions would get asked

[@Laura-Yu]

I’m glad that the KZbin algorithm occasionally does work by suggesting me this video

[@cellokid5104]

Brilliant video. Im very intrigued by the information and your presentation

[@pedrobrito8080]

Fantastic... Never tought of this problem and its solutions.

[@andre-jm8jn]

there are a couple of errors in the video: 1. you did not mention gyroscopic stabilizers 2. the way active fins works is not how you draw them in the video. they change angle of attack by turning front/rear, not up /down as you showed. There are indeed some fins that move up/ down and these are called zero speed because they can function while the ship is at rest. Otherwise great video!

[@dhkatz_]

He mentioned gyroscopes being used in tandem with other stabilizer methods.

[@AdelaeR]

@@dhkatz_ In the video he meant gyros for measurement but andre means gyros that stabilize.

[@SimonEBurgess]

I was having a real cognitive dissonance when he started talking about forward speed being necessary together with the wing profile and that shown angle change. I guessed that it must be an forward/backward AoA change for that to make sense. Thanks for clarifying that.

[@holypeachy]

"She" omg finally someone that knows how to talk ships (ships, not boats. Im to excited about this)

[@bullracing1]

Really Helping me out on deciding which Stabilization System should I use on Stormworks

[@robertnewman4105]

That's really interesting, thank you for explaining

[@IntrepidMilo]

The Conte di Savoia was the first major liner fitted with gyroscopic stabilizers. The ship was built in 1931 and scrapped in 1950.

[@vladconstantinminea]

Yes, but they were huge and acted more like flywheels, keeping the ship stable with sheer force, not by controlling other stabilizing systems.

[@BardCanning]

The youtube algorithm has picked you up now. If you keep coming out with vids now you can "ride the wave", so to speak.

[@themostwanted_xe284]

I always wondered how did ships remained stable in waves. Thank you for explaining this to me.

[@SeidelinShift]

I am seeing this to calm my anxiety attact , thank you for your calming voice