Why are ships painted red below the waterline?
Video Overview & Insights
Anti-fouling red paint is a crucial feature of maritime engineering that protects ocean vessels from structural damage. In this video, we explain why ships are painted red below the waterline step by step using real maritime history and verified chemical science.
I've never seen a ship in real life
Why Are Ships Painted Red Below the Waterline? | Simple Things Surprising Histories
This documentary-style episode from Simple Things Surprising Histories covers the complete history and science of anti-fouling paint, from ancient wooden galleons to modern commercial shipping.
never thought red color would have this much history behind it.🙂😂😂
Topics covered in this video:
• Why almost all massive ships are painted red at the bottom
It was painted red, to tell the sharks to get out of the way.
• What marine biofouling is and how it damages ships
• The history of shipworms and barnacles destroying wooden hulls
Interesting. Great video!
• How copper sheets protected 18th-century sailing vessels
• Why iron and steel ships cannot use raw copper on their hulls
you made that simple :) thanks
• The invention of anti-fouling paint
• What copper oxide is and why it naturally appears rusty red
great video
• The chemical reaction between salt water, iron, and copper
• Why maritime tradition keeps ship bottoms red today
This is the music video version
Instead of searching it up on google.
Now for every like I get I have to drink a beer by the end of the week.
• How the stark red contrast helps sailors monitor the Plimsoll Line
Chapters:
That's the same principle apply for women's Red Bottom heels 👠??😅
00:00 - Intro: The Bold Red Line
00:56 - Chapter 1: The Ocean’s Hitchhikers
This is nice content.
01:54 - Chapter 2: The Copper Shield
02:58 - Chapter 3: The Weight of Tradition
And Quint, the supposed king of the seas shark hunter, decided to paint the bottom of his Orca boat’s hull…black! Another reason it didn’t stand a chance against the mighty Bruce!!🤔
03:52 - Outro: An Ocean Legacy
This video is designed for students, educators, and general audiences who want a clear explanation of maritime history and engineering without unnecessary complexity. All explanations are factual, educational, and suitable for learning purposes.
Interesting
If you are searching for:
why ships are painted red
Red goes faster, that's just science. It'd go even faster-er if they'd paint lighting bolts down there too.
ship bottom red paint
anti fouling paint explained
That's the color of the lead tetroxide paint. And copper oxide is black, FYI.
maritime history documentary
how copper protects ships
Is the answer "to keep their trousers up"? I might have got this confused with firefighters and braces though.
biofouling and barnacles
cargo ship engineering
Redgrows least alge?
why ships don't rust
plimsoll line explained,
Interesting, but you start by saying "red paint just below the waterline", yet all the pictured ships had red paint well above the waterline!
this video provides a complete and accurate overview.
#WhyShipsAreRed #MaritimeHistory #CargoShips #OceanVessels #MarineEngineering #ScienceExplained #EducationalDocumentary #scienceexplained #sciencefacts #sciencedocumentary #simplethings #simplethingssurprisinghistories
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More User Perspectives
You guys are idiots. It’s not paint. It prevents rust and oxidation.
@opperhammerCuprous oxide, the main ingredient in anti-fouling paint, is red, although you can get af paint in many colors now. I have red anti-fouling on my sailboat, and it's been my color of choice for 40 years.
@bbriley721The author is awesome.
@MSTORY.mp4Good to know this stuff
@InstintodeperroThey go faster that way.
@johmyh14He didn't ignore the guidelines, he just thought they were creative writing prompts
@MemeMash-z3bit's not a hard question. the bottom is painted a different colour so they know which way up to put it in the water.
@phils6122Same reason we're painted red below the "waterline". It's the ships nutsack...
@DaHxiBeSeRkI was 18 years old on a ship. The C.O.B. looked across the sea, saw a ship with the red bottom and asked me if I knew what it was. I had no clue, he said,”Diaper rash”😂😂😂😂
@BuddWolfJust realized the wooden ships had worms that destroyed their material. Yet iron ships rust horribly by the ocean’s water. The sea must always be revered. For even the strongest materials of earth can be thwarted by its power and its strength.🌊🚢🌊
@JustAThought155Ships operating on Ork logic! RED = FASSTAAA
@dontknowaboutthis7425It’s a secret that they don’t let the public know. The kraken, is scared of red.
@green7449Italian warships in ww2 had the underwater hull painted in green.
@GiulioBalestrierThis is called countershading and it’s to prevent other animals like submarines and airplanes from spotting their silhouettes from above and below
@Lucubration2I hear obvious AI content, I leave the video. Took me all of 9 seconds this time.
@richardmack1194"Ecofriendly", "highly effective" antifouling does not really exist, and the best products are very expensive. The vast majority of those paints are still very toxic.
@patrickbelliotHistorically crips have always outnumbered the bloods. Og°
@quantumprocess5954Copper oxide 🎉
@SalahuddinAyubi100The audio of this has a strange noise floor that could have been cleaned up :/
@maxek46My guess was that they're painted that way to contrast really sharply with the blue (or black at night) of the sea, to increase visibility and help people who have fallen off locate the ship, especially if they are looking at it from beneath the water for any alarming reason.
@FishSkeleton-A boat painted red........." A boat painted red will sail faster than a boat painted blue, or white, as speed impeding barnacles have no love for red, and therefore will not attach themselves to the hull of such vessel. Old sailors proverb I heard as a kid.
@pennyan2057The answer is at 3:43. Full stop
@harshoperatorCopper Oxide - which one? Copper(I) oxide or Cuprous oxide Cu2O is red while Copper(II) oxide Cupric oxide CuO is black.
@Geraint-n4yRed is easier to see
@DJKRISEYTLECan u not see the measuring tape on the side.. its literally to measure the height of the water.. these are metal ships not wooden.. too much weight on the boat the levels will show it
@DJKRISEYTLEMeeow
@DJKRISEYTLESo that treasure hunters and explorers can more easily find the vessel after the USA navy sinks it 😂
@MautiksThanks! 🎉
@timothywillis8883Isn’t it red so people make YouTube vids about it?
@SteAndersonVery cool
@stanza77Every couple of years we had to get our boat hauled out of the water and bottom painted.
Expensive.
This is mainly because of barnacles.
My science teacher looked at me weird when he asked the same question and I said it was so the ships were easier to find when they are upside down. It made perfect sense to me!
@ashscott6068My dad had tugboat and barges and other boats. That's called antifouling paint and it keep barnacles from attaching to the hull. Used to have copper and Chromium and other strong chemicals in it. Most are banned now. You only see a lot of red when the vessel is empty hence the term riding high.
@IrvingHowe85643