Why are ships painted red below the waterline?
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- Опубликовано: 19 июн 2024
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In this video we take a brief look at why ships use different paint below the waterline compared to what they use above the surface.
Greenwich Maritime Museum: www.rmg.co.uk
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Развлечения
Red makes ships go fasta.
Now I finally understand why I've never seen a purple ship!
Waaaaaaaaaaaaaaah
Should have painted titanic blue, would never have got that iceberg then
I can’t let you do that.
Red paint, and speed holes?
I love when youtube answers all the questions i never asked
yes
Yes 666 likes btw
Yes, and someday it will make a pretty good use of information. Added stock knowledge
Yea me too
yup me too
I had no intention of learning about ships, but my curiosity for all things means that I am satisfied with this video and wish to watch more.
I enjoy science and technology, not particular ships, but this channel has made me interested. I have always thought that the red paint was meant to be corrosion resistant coating to protect the steel hull. Guess I was somewhat wrong, as it prevents barnacle growth. But I was also partially right, as barnacles/organisms may cause corrosion and other damage.
I never did wonder but I do now... And now I know 👍
Same
And knowing is half the battle
Thanks to this video, 10 million people now know why red is painted at the bottom of a ship.
Well there’s your problem lady 🤣
Wow it's South Main Auto out in the wild again. Till we meet again friend.
Interesting side note: the anti-fouling paint on the hull of the Titanic is still at work and there is visibly less decay on the area below the wreck's waterline
Also, her waterline is much lower now than when she left port. 🤷🏽
All this talk about anti fouling,and not one person has ever mentioned Uncle Fouling. No wonder he is always so crabby!
🤷🏽
I can't believe that someone actually made a comment that contributes to the topic, as opposed to all the usual inane garbage comments.😅
@@Jeffrey-Flys actually mate, i hate to brake it to you but titanic has quite a high water line these days
I love how you didn’t take 15 min to tell us why you just got straight to it and then explained it.
Speedyboy_Peanut or he could’ve took 10 seconds to say yeah they paint the bottom so the ship doesn’t get fucked up.
Alright guis before this video starts make sure you like comment and subscribe. Thanks to all the patron and follow me on Twitter. Ok guus let's get right into the video
RUclips used to be like this, until the mandatory 10 min. barrier for monetized videos, became law.
the video could’ve been 1 minute
to explain this
Yeahnhe only took 5 min
Ok so for all the guys that keeps saying to electrify the hull:
electricity creates corrosion, wich isnt good;
Actually there are strips of copper all over the ships which are connected to zinc plates underwater, wich disperses currents and corrodes instead of the metallic parts of the ship
( those are called sacrificial anode)
Even the simple friction between sea water and the hull create currents
It depends on the charge through the hull. Electric anticorrosion is used by some vessels today.
Also to add, Electricity + Salt water creates a toxic gas which you dont want to inhale
Hulls are commonly charged with a few milliamperes of voltage to combat galvanic corrosion if the hulls are steel. This is also done with underground pipelines.
@@crawford323 yes i've heard about it but never had a chanche to work on one, it's more common to have a sacrifical zync attached to the common negative
@@mattiamazzanti8418 The ship I served on was 500’ and while it had massive ingots of sacrificial sink, it also had the neatest sophisticated system to charge the hull just enough to offset and keep electrons where they are supposed to be. Steel not exposed to oxygen was not a big issue but any steel on the weather decks rusted like crazy. Basically the ship was being constantly painted topside. Pneumatic needle gun clamored all times around the clock attacking the topside rust. Very annoying when it was your bunk time. I understand what you mean by electricity causing corrosion. This sort of issue can be found a most marinas and their ac power has bad grounds and is leaking voltage into the water. Leaving your outboard motor down in the water for even a short period, will show pitting on the skeg. I do not know the difference but that kind of current will consume aluminum very quickly.
I first learned about this while reading The Baroque Cycle. One of the storylines involves the crew of a ship who steals tons of gold from the Spanish in South America, and to avoid being found out at established ports, they stop at an island, melt it all down into sheets and put it on their hull beneath the waterline. They realize it's actually effective at preventing barnacle growth, so at some point before reaching London, they replace it with copper and leave it on.
I am sick of you telling stories that are so offensive and gross and wrong and old and weird
Anti fouling paint is red
Anti fouling paint reduces drag.
So red ones DO go faster...
Yes. Red paint also adds some extra bhp.
Nonsense. Anti fouling on my boat was blue.
mans just summarized the video in two sentences
The Kleb owns a red Prius...
Diz 'ere git knows!
In nature bright colours serve as a warning and to stay away.
Ships are very territorial and have even been known to attack people.
@@tdh2044 😂
@@tdh2044 r/woooosh
Omg im so cool now! Right?
@@tdh2044 Ever heard of keelhauling? That's how a ship attacks people.
I can confirm
certain subspecies of ship like the Oil Tanker are particularly dangerous for their venom
“Why are ships painted red below the waterline”
10 million people: well well well. Lets find out
Pfp adds to this 😭😭
@@catjammy1099 Name is accurate though
Wow, now 11 million in only 3 months.
12M now!
Just incase anyone was wondering you choose which version of paint ( hard or soft ) depending on how often you can repaint the vessel and how fast it goes a 60mph speed boat would rip all of the soft or ablative paint right off but the ablative is better at keeping the bottom clean on slower vessels
Ah yes, thank you. I wish the video had explained that. I was wondering why wouldn't all ships just use the hard paint.
Sir I have a doubt in the video when he is explaining how hard and soft painting method he said soft paint remove over time and hard paint won't come off but marine plants will grow 3:37 he said then what is the use of the copper oxide. Please clarify my doubt.
@@m.arockiyadhas6515 copper oxide will poison most marine life but some of the more resilient species will still grow and foul up the bottom both versions of the paint hard and soft have the copper
This is actually the same reason that barns are traditionally red. The reddish oxides used in the paint help prevent erosion from microbes / plants.
Thank you! You sent me to a google chain, and here's a return present ... barns in Kentucky are sometimes painted black because tobacco needs intense heat to cure. Cheers, AlexB
I knew it was something along those lines but for the life of me I could never remember what it was
I thought they were red because of all the excess iron and red paint leftover from the previous world wars.
Barns. The least aquadynamic of the ship world.
Dylan sky not trying to sound snobby but no, not because red paint is the cheapest it’s actually the most expensive colored paint you can buy black is the cheapest I’m not sure why just thought I’d thro that out there
haha, red ones DO go faster.
I'll never question an Ork again.
I see your a warhammer fan
what about blue for luck?
Youz eva seen a purple boat? 'Cuz not! It's da sneakiest!
Yellow for more powerful explosion
ARGH,ARGH!!!
3:50 My major interest of study in college was marine invasive species and.. hulls and balast were some of the biggest contributors of introduced invasive species. This affects not only the local ecosystem but game fisheries and comercial fisheries. This is super important issue in our present global trade network.
That remark, "invasive species", is very xenophobic. How dare you. They are migrants in search of a better existence.
Really?!
@@coloradostrong obviously a Florida resident. How is your pet python doing
@@coloradostrong I know this is a joke, but for the record: nonnative species are only labelled invasive if they do harm to the new environment in some way. Otherwise, they're called introduced species, and are generally not hated. For instance, European honeybees are an introduced species in North America, and people love them. If human migrants do harm to their new country or its people, then it's not xenophobic to hate them for that harm. However, refusing to take any action to mitigate the harm they do ("harm" not necessarily meaning crime; it can include things like competing with locals for jobs, which can be managed with better labor laws and job training for both the migrants and locals) or hating them just because they're different is xenophobic.
The only "ports" that allow Hull Cleaning are those with Dry Docking facilities, ship goes in, take away the water and give it a damn good scrapping. And a fresh lick of paint if needed
Scraping. Sorry. I can't cope
When I was in the Navy in the 80s, our recon flights would take photos of USSR ships and planes. My favorite was a Russian floating dry dock. It wasn't big enough for carriers or destroyers, but certainly for the ubiquitous Russian "fishing trawlers" we all have heard about. The best thing I liked about the photo is one could clearly see where some of the crew hung out their laundry to dry.
@@davidcaldarola5188 in English, but Russian accent “these capitalist pigs will fear our mighty vessel...Vaselei!! Is that your shorts on the conning tower!?
Cheaper to buy a new boat.
I was going to ask that very question.
It is obvious: they paint it red so the water knows it is not supposed to go past it
🤣🤣
gun control laws in a nutshell lol
@@gregroberge8873 Well, yes the gun is basically an AK's body but no stock and a shorter barrel, but still we should classify it as a handgun
😂😂😂😂😂
@Dr. M. H. He is kinda correct tho, it maybe a different color but you'll know the ship is overloaded if it went past the load line
They're red so icebergs can see them better at night.
00F
Definitely not after titanic as that was also red on the bottom
That’s dumb, because icebergs obviously don’t have eyes...
Oh.....it was a joke 🙊
And so the U-boats can find them
Good one. Lol
*Scrolls pass
My brain: Scroll back...Just incase you gotta educate somebody!
Lmfao
Omg me
So true ! 😂😂😂
Reason why I clicked 😂
Same
This is so gonna pop up in everyone’s recommendations year’s from now
Just want to let you know you don't need an apostrophe in the word "years." Most words you just add an "s" or an "es" or sometimes an "ies" to make it plural, but never an apostrophe.
dude this video was uploaded over a year ago, and there’s a tonne of comments from the past few days so... i think WE are the people whose recommended it has shown up in ...
or a day..
You are correct
Or now...
Simple: sharks hate spicy food and hot sauce is red thus making sharks not want to bite it
Ok this made me laugh harder than I should have
BIG BRAIN
Instructions unclear, got devoured by sharks while trying to defend by cutting oneself so they see red and not bite
Theyre attracted to blood blood is red?
@@bobbob-vs7kr this man is ahead of his time
This guy: “Have you ever wondered why boats are a different color under the water?”
Me: No but please tell me anyway.
same
700th like
I now have a silly mental image of "This guy" becoming the new Prophet of boat-painty knowledge, and going on a mission to spread the good word at street corners and malls.
@@gummybear3387 #880 for me 2 months later
@@gummybear3387 939 just now...👌
About 4 years ago, the company I was working for lifted out a boat which had been moored on the Moselle river in France. There were at least 500Kg of mussels on the hull. 18 months later, a colony of at least 100Kg had grown on the hull. It isn't just a problem for boats which go to sea.
I mean, it's probably even more of a problem for moored boats, since they just stay in one place, and the barnacles can just snuggle in I would guess?
Once again the algorithm has brought us all together in another installment of "why? Why do I need to know this?"
And I'm here for the answers 💃😊
I love you pfp
So true.
More people need to learn about more things about more topics because as we've all experienced in the last couple of years.. people are ignorant as fuck.
@@ezmyrelda speak for yourself, ignorance has been around since the dawn of man.
This information is no practical use to me yet I feel better for knowing it.
You can never know will it have practical use later :)
@@mariopezic4247 true dat
same here
@@mariopezic4247 One day it will come up in a pub quiz !
Is that profile pic from the day the earth stood still? Not the keanu one
Just curious
Ships need a robot cleaning system that scoots around the hull like a Roomba, and works while the ship is underway.
deezynar There is one, but it only works when the ship is not underway
COMING THIS FALL
ROOMBASHARK
'The Roomba was tired of cleaning the ships hull, so it pursued its dream in acting.'
-Director
@@erikarneberg11 I think it might be possible to make it work while the ship is cruising. Have it enter the water right at the bow, go down to the water line then work in a horizontal line going towards the stern. It would rise up the hull to above water level at the stern, spend time getting its batteries recharged, return along the hull to the bow, and go under water just below its previous path. It would need to be very smooth in shape so it would create hardly any drag. It would need to use magnets to stick to the hull. It would need to have batteries to power the motors that move it, and do the scrubbing. It would need a cylinder of compressed gas to inflate a bladder to make it float to the surface if it ever came loose from the ship. And it would need to emit a radio beacon so it could be retrieved.
deezynar -Interesting ideas, but still a challenging task- with thanks to Michael Rickards comment for jogging my memory, take a look at ecosubsea.com to see the device I was referencing... They can contain almost all the waste that is collected while cleaning the hull, and the video I saw referenced using the organic matter to create biodiesel, which could be difficult while underway, but I like your line of thinking!
@@erikarneberg11 I don't see a reason to collect the barnacles and other accretions except that the Ecosubsea company does the cleaning in ports; and ports refuse to have foreign sea life dumped in their facilities. If Ecoseasub is able to clean an entire ship in the time it takes to load and unload, then that is the superior system. But if they can't do it while the ship is already in port and out of service, then it starts to make economic sense to be able to clean the hull while the ship is underway.
Its realy interesting how, without wanting, end even while trying to reduce it, we cause globalisation to happen even in the animal and plant world.
It is only the natural order of things. It has always happened and it always will. The planet and its ecosystems will continue to adapt and strive for equilibrium
@@av2053 Right. But adaptation will still always come. If we ruin too many different environments to the point where they are largely unlivable, we will in turn lose out on valuable resources for our own sustenance, causing a drop in human population. Its just the cycle of life here on planet earth
@@av2053 not true, when there were landbridges between europe and usa several species migrated. Some of those had no natural predators or were better predators. And took over. It has always happend, and nature will always find a way to balance itself out. It just would not happen in our life time. Humans have only made it go faster. That by no means is the first time such a huge selection pressure has been put on the world. Im mot saying its right or wrong, just that nature will survive, with or without us.
@@av2053 fair enough!
I didn't think at first that this was one of RUclips's random recommendations, as I've gotten into ships and navigation recently, but then I read the comments.
Very fascinating video!
Her bottom is red because she’s been a naughty ship.
iwanaGoFast2010 Please shut the fuck up
this
69 likes nice
Why copy other's comments?
Uh
*Very Informative*
I like the use of Animations too!
Same!
Agreed
Wait a minute didn't you comment on a r/blessed images
The info graphic show is way better
A question answered that I had never really thought of in my life. Gotta love it when this happens.
This does remind me for everything I learnt in college and docks. Thank you!
Short answer: It's a paint that stops growth on the hull, it's red.
Booooooo...succinct, yes. Fun, no...the short answer doesn’t help me go down any rabbit holes and lose hours of my day, while filling my brain with more useless information than I can handle, and would only find useful in trying to impress people with the veritable wealth of knowledge I possess. Yes, yes I AM the life of the party...
Well it was only a 5 minute vid but nice to know it can be summarised in one word; barnacles.
Cheers cuzzy
@@JoshyMill interesting, all i could find in a quick search was this: www.westmarine.com/WestAdvisor/Top-Ten-Antifouling-Paint-Buying-Questions . When you say copper free, are you counting cuprous oxide?
Huh. My guess without watching would've been something to do with visibility and how the water filters different light spectrums, much like how I dive with blue and green LEDs in my headlamp- seem to get more illumination for less than my white handheld spots etc.
So its like how walls painted with graffiti blocker are that gross not quite neutral color nobody would paint anything on purpose. Interesting.
Is it legal to grow weed on the bottom of ships?
Only in Colorado. ʕ•ᴥ•ʔ
Absolutely. Especially in the Philippines.
Yes. This method was first discovered off the coast of Jamaica mon.
In international waters you can make heroin if you so choose.
It grows itself means its free.
I love how this was randomly in my suggestions and I was actually wanting to know the reason
I absolutely love this channel! Whenever I'm tired, watching one of these very interesting videos always proves to be very calming and is simultaneously very enlightening! Keep up the good work!
ANSWER: Because red paint historically contained copper which resists “fouling” - the build up of biological materials like barnacles and algae.
Lol thanks man
Thank you saved me 5 mins
thanks dawg
Saved my time. Thnx
Hahaha. Mad lad.
I work at a boat dealership and whenever someone buys bottom paint I always tell them. "this paint is designed to kill living organisms, and you are one."
In other words, be safe when your painting your boat.
That bottom paint is going away. I’ve always heard it called “abradable paint” because it is made to wear off over time. The last couple of bottom paint jobs on my parent’s boat is a tough epoxy type paint that barnacles have a hard time sticking to. It works good.
Well said Ryan...have done it many times and holy cats is that stuff ever toxic !
And after it is released in the environment it finishes in the food chain until it reaches us again. Good job naval industry...
@@magilviamax8346 That wasn't done on purpose and you cant prove it was.
Ur in the wrong place m8
"We never asked this question but need the answer"
Working as an unlicensed deckhand on a container vessel and I didn't even bother about learning about this. Thanks for enlightening me!
I'm accumulating pointless info for a gameshow somewhere in the distant future. 👍
Get on the gameshow ASAP
My brain is so full of useless information like this, there's barely room for the important stuff
What I’d like to know is why we can remember this stuff but can’t remember peoples’ names!
What was the point of the thumbs up emoji?
for real😂
"Why is her bottom red?"
Because she's a very naughty liner?
@no.
*കശ്മലൻ*
gachiHYPER
Hahahahahahahaha
I need friends
She can get pretty dirty sometimes, so we had to slap some red on her bottom
0:31 looking at the photo of the barnacles under the pier really makes u realize how awful the torture method “keel hauling” must’ve been. For those who don’t know it’s when a rope is run under the ship lengthwise(bow to stearn) & a person is attached to the rope. Once the person is tied to the rope they would then throw the person overboard & reel him in by pulling the rope on the other end. Drowning is the least of your worries. As the rope is pulled from one side of the shop to the other it drags along the bottom(keel) of the ship. Since the ship is typically coated in barnacles the person would get torn to shreds as they get pulled from one side of the ship to the other.
+ the salt water makes it even worse. One of the most horrific ways to die.
I don't know why but I really enjoy your uploads. The only time that I've been to sea was 20 years ago and I went on a fishing trip in the Irish Sea. I have never been interested in sailing, shipping nor ever considered going on a cruise. So I'd like to thank you for teaching me something about myself that I have been unaware of and I'll be 50 in a couple of years!!! Very interesting, not too technical, and all in a perfect bite-sized video 😉👍
They are red to warn whales so they don’t bump their heads
Alistair, you need a foam helmet buddy! Stay safe out there...
This is a very wholesome comment
But what if their colour blind :).
Glad I found this comment. I knew this youtuber was speaking barnacles in the video 🤨
You're an idiot!
There is actually incredible technology being researched and implemented today! I learned about this at the Monterey Bay Aquarium.
Sharks skin has something called "dermal denticules" (probably not spelled correctly) or in English "Skin teeth"
We have redesigned this texture onto metal plating and have placed it on the outside of hulls to reduce fouling and increase ship speed and efficiency!
The faster you get to where you're going the less fuel you use. The less fuel you use, the less greenhouse gases are released into our planet!
That's super cool! Thank you for sharing!
It's more like :-
The less fuel you use the more money you make
And the cheaper it is to ship goods and the lower the cost of buying them!
Fast=/= efficient but yea good points
i love the MBARI youtube channel!
I always love when my intuitive answer matches the answer presented in the video.
For all these years, I thought the hull was painted red because it is for the rescuers to notice the ship from afar in case the ship was capsized.
would be orange then! orange is best visible in blue, as it’s the complementary color.
I'm glad someone finally got to the bottom of this.
And made a "hull" video about it.
LOL! This got me!
I see what you did there
._.
Pun intended
informative, straight to the point. youtube needs more videos like this.
3blue1brown.
Numberphile.
Yeah those are good channels for you
No, we need more videos where you hear "we're going to tell you why, but first let's talk about....." I mean honestly, how are people going to appease the RUclips algorithm by making videos that are at least 10 minutes long if they don't pad out their video with pointless nonsense?
@@Hidden_Lizard by making videos about complicated mathematics and stuff
Very interesting!
I like your stuff a lot, you keep your videos short and directly to the topic.
I'm pretty sure I'm gonna keep watching your stuff when I begin studying nautical science.
Also, as a bit of a chemistry nerd I enjoyed learning about copper based paints
I've watched this video at least 10 times. Every time, I can't remember the reason why and youtube somehow knows to recommend it to me again.
I don't know how many times I'll need to watch this before the information sticks.
After riding my Harley over 700 miles yesterday, I noticed my bottom is red below the waterline as well.
if there is a waterline, you should have made more restroom stops.
Because you ran over a bunch of ding dongs.... keep up the good work. Some people dig high scores.
Took me a while to understand the joke but it was rewarding
You might need a TaMpON
This joke is under the water line…
I've seen some silicone antifouling on our "fast ships". they say it is also matter of efficiency since the silicone make the water slip easier on the hull.
That's a lie
Ah yes the friction coefficient. so proud of you right now.
Anybody know why they don't use ceramic coatings like silicon dioxide or something? They're really durable and hydrophobic. I guess maybe it's a cost issue for something the size of a ship?
WoW, that is really interesting, thank you for sharing that with me/to all of us 😊
Very good explanation. Thank you!!
Once again, RUclips drops me something I would never have thought to look up but is weirdly fascinating.
Cool video. Subbed.
I would love a video about water ballast and invasive species ... TY
Salt water ships releasing ballast water have had a terrible effect on the Great Lakes introducing many invasive species.
@@terryboyer1342 There are now maritime laws in place that restrict the release of untreated ballast water in different regions- this is controlled via electrochlorination, UV & chlorine processes. This greatly reduces the impact of ballast release to 0% as it kills off most of the marine life. I know this because I used to design the skids with these processes on.
@@benmcewan1989 sea gulls?
@@benmcewan1989 This is true, but so much damage has already been done. These measures are too late for the Great Lakes. A shame this wasn't anticipated and put in place years ago.
Ben McEwan a day late and a dollar short. Asian carp is going to be our next invasive species.
This was literally my job why am I watching this? 😅 Love your videos!😁
I like how i clicked on the video and as soon as the question in the thumbnail was put forth, the answer came back to me
Comment Section:
40% actual boat knowledge
10% RUclips recommendation system
50% "Why is her bottom red?"
SHAWTY HAD THEM 🍎 BOTTOM 👖
@@stevethea5250 🥾🥾 WITH THE 🐈
@@SirPhasm 👢
👢
0.03% comments like yours
10% brain: don’t u wanna know why
Me eating breakfast, what should I watch while I eat?
RUclips: Why are ships painted red below the waterline?
Me: You know me too well.
very relatable comment hah
That was rewarding, thank you very much
Now that is a question I have never asked myself but I'm glad that I got the answer to.
In Denmark, leisure sailboats are sometimes painted with a blue , biocide-free paint, that works by simply not adhering to the hull strongly enough to hold any growths, so that they fall off with the paint when the boat is at speed.
The main disadvantage is that this paint usually needs to be re-applied once a year, and it cannot be more than a day or two before putting the boat back in the water (it's usually done in spring, as most sailors have their boats on land in winter).
Not just Denmark.
You're talking about ablative bottom paint. I have the same thing on my boat, but you don't really need to re-apply it every year.. You only need to re-apply it if the you sail too much and it has worn off. On my boat I need to paint her bottom every 5 years with ablative paint.
@@edloki3057 sail too much ?
@@dorfrez You're right... No such thing as too much sailing.
Here’s a fun fact! When I was a child I asked my dad why they called ships she. His reply was, because they have broad bottoms? Happy Sunday!
....And because boats/ships give you problems, like a woman.
The happiest days in a boat owners life are the day you buy her and the day you sell her.... Just like women, the day you meet her and the day she leaves you.
@@RedneckDeluxe And because it costs so much to keep them pretty, according to Admiral Nimitz 😂
Muddy Boots oh my god-
I would think the reason is because they carry things?
Flagger 75 - everyone who says fun fact invariably next says something that's never fun and rarely a fact. You didn't buck the trend.
Im a diver and do some hull cleaning and I never even knew this 😅
Thanks for all the great vids
I love your videos ! Thank you so much !
I thought the red is like stop sign for sea life
Some Guy 🤣
You insane 😂
I thought it was to make sure your boat wasn't sinking ;-;
I aspire to get as high as you my bruh Some Guy
must be really high
Vid: have you ever wondered why...
Me: No, I’ve never wondered but thanks lol
Also me: watches entire video
Underrated comment.
Corny
@@aidenlikesfrogs9259 hahha yes
Only started wondering why when you asked "have you ever wondered why..."
Self priming question
“Why is her bottom red?”
I shouldn’t have laughed as hard as I did
Because she’s been naughty
You know, I need absolutely none of this information but for some reason, I've been binge-watching the hell out of it.
This was very informative, and I learned numerous things I hadn’t known.
What the hell are the reasons why 4,300 people disliked this video?!
They were highly agitated by the thought of a red bottom...
@@mikegrant8490 Doesn't a red bottom come from being "naughty"?
They clicked on it expecting a totally different sort of red bottom
me: Its 4 Am, i need to go to sleep.
My Brain: Look, dont you wanna know why ships are painted red?!
No .. well yes
Its 5am rn 😪
How funny, it was literally 4:12am when I read this.
Rott Dogg hi
@@lilmush3383 Hi
Quite enlightening~ thank you!
Thank you for the lovely video
okay you've explained the red so why is there a black stripe near the waterline on the more recent ships?
Can you send a link?
It’s known as the boot stripe, it’s purely for aesthetics. They tend to be of dark colour to visually reduce the scum line.
Rallye stripes make the vessel go faster. A significant improvement over speed holes used before.
@@SuperYachtCaptain The boot stripe is not only aesthetic. It provides an important function in small boats. It visually shows if the boat’s trim is where it is supposed to be. Larger commercial boats have trim indicators and do not need the boot stripe for this.
The boot stripe should be painted parallel to and slightly above the designed waterline. At anchor, the trim should be parallel it. If it is significantly off the actual waterline, you may need to reposition gear, so the boat will perform better underway.
Most boats handle best when running parallel with their designed waterline. Outboards have trim adjustments to change the angle of thrust, to optimize performance.
Small racing sailboats perform best at the ideal angle of heel for the conditions. The boot stripe is a highly effective tool to measure this.
Mainly to mark the water line
I was wondering about it for years, glad you made this educational and useful video that solves the question that many beside me also have.
Cheers again for another informative video!
Best narration i ve ever heard
Why did the fish blush?...…….because it saw the oceans bottom
"Baddoom Ching" :)
Because the sea weed?
I thought the fish saw the Queen Mary”s bottom...
What makes fish high?........
*Seaweed*
Pussking Leo the average household or surface level fish would be crushed within a second at the bottom of the ocean because of the pressure (if it wasn’t already eaten by marine life that look like demons)
I never even considered that ships can transport marine life and distribute different marine organisms around the planet, possibly creating invasive species in the process, but it makes a lot of sense. Would love to see a video about such a topic.
Zebra mussels were transported from Eastern Europe on ships into the Great Lakes. There, they attached to small craft. Small craft that were moved from a Great Lake to another lake, transported zebra mussels to other lakes, state by state, until they reached Texas. Now the invasive species is in at least 15 Texas lakes, including 30-square mile Lake Travis, near Austin. One female zebra mussel can produce up to one million larvae. In just two years, there are already hundreds of billions, or more, of zebra mussels in Lake Travis. They will cause hundreds of millions of dollars in damage to boats, docks, boat lifts, municipal and residential water intakes. They get into boat water intakes, clog the lines that cool engines, and burn up the engines. They get into waterfront homeowners' water intakes and can move up into a house and clog water lines within the walls of a house. Search "zebra mussels' here on RUclips for more information.
Happens with fruit going thru customs everyday... Look out for spiders in your bananas
The Northern Pacific Seastar, a.k.a the Japanese Common Starfish, has invaded Australian waters. The most likely cause is through ships taking on ballast water in Japanese ports and later discharging that water in Australian ports.
Asian Carp comes to mind. ( The fish that are scared by boat motors and jump out of the water.)
@@CharlieK92004 that one was more due to someone used to farm it, but it got away and got out of control.
OMG thanks youtube for recommending this channel. I have no idea why, but thanks.
She might be red cause of all the spanking from waves.
r/cursedcomments?
The “Red” bottom is known as “anti-fouling”, hence it only come in two color is red or black.
Black on the hull towards the red is known as the “boot topping”.
Anti foul comes in whatever colour you want!
@ian mcavoy Also have seen it in green but im sure is not that common, and it also looks ugly, and i saw once people from 2 different sailing vessels using white but the problem is that a light color actually helps te growing so they never used it anymore.
Most times i see using red, blue, black and grey, but you can get whatever color you want.
Finally someone answers the actual question!
Can come in greens, blues and violets. A Royal Navy warship has even gone to war with a bright coloured light blue bottom!
do you know what "hence" means?
nobody:
youtube recommendations at midnight: WHy BOaT rED?!
Sleepy heads : Click
Hahahah... This is how this happened
yeah...it’s 00:55
Haha
@@pizzarina29 Content creator: profit
The title on the thumbnail did all the work!
Informative and insightful video, thanks.
I can’t believe nobody has pointed out that the thumbnail says,
“Why is her bottom red?” xd
Because the SHIP want to attract a MATE. Get it! Shipmate......no......I leave my self out
wHy r U aSSuMInG tHe GeNdeR???
She is on her period.
Ships are referred to with female pronouns.
@@ares_bluesteel true
Me: I need to sleep.
RUclips: Ever wondered why the bottom of ships are painted red?
Me: O - O
*i never wanted to know the answer until the question was asked.*
This is me to a T right now!
Same
You'll be glad when this comes up in a pub quiz.
Interesting and enlightening.
Thank you.
A video answering a question I never asked. God I love RUclips.
I pride myself on gathering these types of trivia 😁
"Why Is Her Bottom Red?"
*Wouldn't You Like To Know?*
Because it slipped in the wrong hole and caused some bleeding 😨
Jesus help this man
Wouldn't You Like To Know Weatherboi
@@netardedrigger9683 *where are your parents?* 😂
@@jonathoncarranza4414 I say from impact play.
The silicon based antifouling is a more environmental friendly alternative, however, it is tricky to apply, and one needs to choose the correct type. The antifouling is self-cleaning. At the right speed, the aquatic life will wash off. If you choose the incorrect silicon antifouling, this won't happen, and the vessel will still grow a beard.
I’ve officially turned into my father watching this video...
I've literally never ever thought about this, but now I know. Thanks RUclips.
I have seen graphine mixed with clear/surface colour coat over GRP composite on yachts (in New Zealand & Australia). It increases smooth lower friction surface, is extremely hard surface for algae to attach to, and it is thought that a slight electrical charge generated on the graphine surface as vessel moves through the water actively reduces organism growth.
Fun Fact: The copper hulls reacted with the high salinity of the ocean and made the ship a kind of crude alternator.
what is an alternator? english is not my mother tongue
Very fascinating indeed sir thank you for sharing.
Always good to know. Knowledge is power.