You Probably Didn't Know This About Ships
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- Опубликовано: 19 май 2024
- In this video, we're going to talk about ships! Ships are one of the most fascinating things on earth, and you probably didn't know this about them. From the design process to the different types of ships that exist, this video is a great way to learn more about ships and see how they contribute to our everyday lives. Whether it's a ship, a cruise ship, or a cargo ship, you're sure to learn a lot of new and useful things in this video.
If you're a student of engineering or architecture, then this video is a must-watch! By the end of this video, you'll have a better understanding of ships and how they play an important role in our society.
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The bulbous bow is usually part of a ballast tank(water for draft/trim/stresses). Some ships have it as a void space (air), but not many. The design and shape of the bulbous bow is designed for the optimal draft and speed.
As a sonar technician, I can tell you that sounding equipment in commercial vessels is NEVER in the bulbous bow. Never. The transducer for any such device is installed in the best available spot under a vessel, where cavitation won't be a problem. This is often far forward on the hull, but never in the bulbous bow. Some vessels have the transducer mounted towards the aft end of the engine room, but again it depends on the ship hull design making that practical.
Great information.
But, the question ??
What's Inside 👈
That was the part I was interested to know ???
The ship fueling process is done over 90% of the time at the dock. Fuel barges, some powered, some driven by tugs, bring fuel to where the vessel is docked and pump it onboard. Doing it at sea may be practical for a relatively small number of vessels but it is very impractical for any vessel that can simply pay for fuel delivery at whichever dock they frequent. In the case of LNG (liquid natural gas) vessels this is particularly necessary.
My question is, Why is it called "cargo" if it's on a ship, and "shipment" if it's in a car or truck? And while you're at it, why do we drive on a parkway and park on a driveway?
😂
Only in America!
The bulbous bow also requires the boat drafting a certain depth, and traveling a certain speed for optimal benefit. It actually doesn't help 100% of the time.
So whats stored in the bulbous nose of the ship ?????
Air. They are empty.
Or ballast water.
Mucus.
@Lawrence Widdis lol 😅
Or concrete
The speed of a ship is limited by its waterline length (measured at the waterline from bow to stern) in feet it works out to the square root of the WL times a factor, generally the factor is approximately 1.34, to go faster than this, the vessel must change from being a displacement type to being some kind of a planing hull like a speed boat, this means that the vessel is using the lift generated by its forward speed to lift the hull out of the water and fly over the surface, doing this requires a lot of power. Your comment that larger ships have bigger engines is largely true but generally increasing the power of a smaller vessel won't make it much faster. Using my formula, a 900' ship could go as much as 40 knots while a 400' ship could only do about 25. Most merchant vessel actually operate way below their potential top speed both due the desire to be more economical in fuel consumption, and that they lack enough power to actually achieve that speed. Vessels with fine lines will go fast than fat ones, thus the canoe is faster than the rowboat of the same length. A thousand foot cruise ship probably can do about 23 kts max while an ocean liner like the Queen Mary can do the mid thirties while the aircraft carrier gets into the forties. The cruise ship probably has propulsion motors (most are diesel electric) totaling about 50,000 hp, the Queen probably about twice that, while the carrier will admit to 250,000 hp (and probably makes a lot more), fuel burn for the cruiser would be about 100 tons/day, the Queen about 200, and the carrier would burn about 500 tons but it's atomic powered. Anyone want to pay for 30,000 gallons of diesel oil each day? That's about a hundred tons. Remember too that these ships use a lot of electricity and it probably takes about 25 tons of oil daily to keep the lights on. By the way, if these ships had steam engines like the old Queen Mary or the SS United States, they burn about twice the fuel tonnage daily.
Excellent write up, thanks for this 👍
Wow... That was more than I needed to know, but, heck, I'm glad I read yer post. It is very informative, and I appreciate the effort you put into it!
Cheers!
SS United States was a streamlined rocket. My favourite old ship 😊
ships still use heavy oil at sea so almost like asphalt ., but that is changing due to maritime regulations . near ports they usually have to burn low sulfur diesel . ships are also putting in scrubbers which basically move the particulates into the water instead of the air. others are actually switching to propane.
Well I know my cruiser weighs 16,000 kilograms.
Never did learn what’s inside.
Mostly void space to help with weight distribution, but, in naval ships it often houses a sonar system.
...as far as I know, anyway. I'd bet that there are many uses for such a space... Crumple zones, like in a car, perhaps, to save the main structures of the ship in a collision, etc? (That last one is a TOTAL guess.)
The thing at the front is a gate which opens to swallow submarines. Any James Bond viewer knows that.
That is when I go out sailing with my submergible yacht I stay away from such ships.
I did not know that!
I saw you last week, you were right next to one. 😂
The bulbous bow is hollow but strengthened, using girders, floors. In reality it is a very strong void space accessed via welded manholes or bolted manholes.
It also reduces bow pressure and thus more fuel efficient.
Floors eh...someone has worked in a shipyard.
I would imagine it's also made into a watertight section in case its punctured.
Thanks for actually answering the question
oh... a bulbous bow is hollow... so that's what inside it...
@@alimalizxcvbnmaccbbm2616 hollow in a ship building context, as a buoyancy space but requires strengthening against collisions and integrity strength. In ship building you would know.
The ship is just excited to have you on board.
I miss being able to see the dislikes.
Stabilizers are to minimize rolling, they have no control over pitching
Interesting, but never answered the question!
On the navy ships it also contains Sonar Gear for pinging ahead for submarines/ other ships and whales..
I thought that those ships had battering rams to take out the competition!!
I served my country on the super carrier...The USS Constellation CVA-64. She was one finely tuned machine. She held 1,000,000 gallons, just for proplusion. Don't remember how often we got new fuel.
Refueled her numerous times on the USS Ashtabula (AO-51)
My dad was a plank owner when she was commissioned. He was an LT and an aviator.
Every 4 Days. JP-5 for Aircraft and DFM for Ships Engines....
I really enjoyed the comment section because the people have very vast and great knowledge thank you for the video it was very educational I knew nothing about it until now and watching the video and reading the comments well done thank you❤
There is a hovercraft service still running between Southsea and the Isle of Wight and there is a hovercraft museum in Lee on the Solent. 👌🏼👍🏻😎
Bulbous Bows actually started with WW2 Subs. The Bulbous was where the Submarines sonar was located. It was only by that Sonar feature that they found the bulbous was beneficial for vessel efficiency.
"The first bulbous bows appeared in the 1920s with the
“Bremen” and the “Europa”, two German passenger ships
built to operate in the North Atlantic. The “Bremen”, built in
1929, won the Blue Riband of the crossing of the Atlantic
with the speed of 27.9 knots."
@@foghornleghorn8536 Google search of those ships in Dry Dock shows no Bulbous Bows on them....unless your Drunk.
These bulbous bow of today came from WW2 submarines.... unless them guys were Drunk.
@@wavehaven1 "Bulbous Bows actually started with WW2 Subs."
"These bulbous bow of today came from WW2 submarines...."
A simple google search for
*Bulbous Bow Design and Construction Historical Origin*
Have a great day.
The paint contained lead, which was red, therefore the red color
I didn't know about the fins' stabilizers. 😱
In some merchant navy ships the bulbous bow contains the echosounder so the bridge knows how much water there still is under the bow. In many ships this instrument is located a bit more astern in the forepeaktank.
I do like his joke right after that: "It reduces costs and consumers may be seeing some of that!"
Hahahaha
These videos are like essays in high school where you over explain things or add extra words to increase the overall word count…
It looks like something to do with how new boats are brought into the world.
🤣🤣🤣🤣
Uh, should we be seeing this thumbnail? What if someone walks in while we are looking at this?
Is that a bulbous bow in your pocket, or are you just happy to see me?
Very entertaining and fun to watch. Thanks for posting this.
The big blob on the front disrupts the bow wave and helps the ship cut through the water like a hot, dull, rounded over butter knife through tough, dried out, over cooked steak.
didnt say whats inside the bulbous bow
If he told ya, he’d have to kill ya.
I believe the red color was an intentional carryover from now illegal to use Red Lead Anti-fouling paint.
All nautical Architects use 1.34 * √ the waterline as their design gauge for how fast they are building the ship that they are designing
Sorry but crew fatigue is not a factor for stabilizers. Also - stabilizers are only used on a limited number of vessels, you do not see them on tankers or drybulk vessels.
The purpose of bulbous bow is to reduce the drag and improve the ship's speed.
'Hump' speed increaser.. helps prevent bow rise and bottom plane angle that caused increased drag as the ship stars to get into a configuration of rising to plane, thus a climb angle as water is relatively incomprehensible... also due to the propeller(s) in the back (stern) are increasing the velocity of the water they go through, they also suck the rear down to a degree.
So who discovered the effects of the bulbous bow? One account tells of a torpedo boat developed by the UK in the interwar period, where a small fast craft was fitted with a single torpedo carried in an integrated tube in the bow at centerline. The torpedo protruded slightly from the hull, just below waterline. (The idea is to charge toward the slow moving capital vessels, fire the torpedo and run.) The Royal Navy commissioned model tank testing to assess how much of a drag penalty would result from the protruding torpedo, and were shocked to discover that drag had reduced! And thus the “bulb” was born.
Excellent video
💪❤️
Sending full support friend i hope see you around my house Stay Safe and God Bless
Heavy fuel oil (bunker oil) is now regulated by the IMO to allow low-sulphur fuel only. If a high-sulphur fuel is used the ship need exhaust scrubbers to remove the soot from the exhaust plume.
It might turn out that was a mistake. All that sulphur was feeding the plankton and blocking the global warming a bit. Not now.
Shipping with crude oil will never be completely replaced.
If a hovercraft can travel on both land and sea are the items it is carrying considered a cargo or a shipments?
Bottom paint also comes in black, blue, and green, although the red is considered the most effective.
That was interesting 😊🌺
I always thought it was for pinging. The ridiculously loud noise that scans for other ships in the water.
I love going to sears and using their hovercraft. but wait, what's inside?
The red paint aka anti-fouling paint on the bottom, until recently was also made with mercury and arsenic and was SUPER toxic. They started using copper in later years.
4:46 - Yes, but WHY does a longer W/L allow higher speeds?
9:07 - What 'alternatives' to buhker?
It has to do with the size of the wave created proportional to the length of the hull. It's called the haul equation if you actually want to understand it, but it's not easy to explain without a decent amount of math
I seem to recall, that the bulb at the front is also used to store fresh water.
Nope
Great video
Why do the ship never overheated?
8:00 that ship kinda of reminds me of the ship that went to go see the titanic wreck.
Lol. but it doesn’t have submarines..
I always thought this was how you tell the difference between a male and female ship.
This guy is a fricken genius
If the bulbous bow makes the big vessel fuel efficient, why is it not equipped in small ships as well?
It is.
Smaller craft try to fly over the water to reduce drag. Obviously a bulbous bow would be counterintuitive.
Fun fact, those things on the top of the titanic and the three of them were working The The last one was not working it was just for a
aesthetics
Not quite true. The fourth funnel worked, but it wasn't there for the engines, unlike the first 3. It was for the kitchens and ventilation systems.
Great video! Thanks.
👍👍👍👍
@@BeyondFacts what's your name handsome
Big ships are faster than little boats except when they're not. Sherlock.
Candy, lots and lots of candy‼️
Wich translates into savings for costumers.
Ha
Hahaha
Hahahahahahahahaha
Oh boy, that one really cracked me up!
epic vid man
Navy LCAC operators are pilots. LCAC is the hovercrafts in the Navy
I thought that is used for Iceberg lol😂
Remember Jacques Cousteau? He had a bulbous bow installed on the Calypso as a viewing compartment. That is how I was lead to believe that that was the first bulbous bow.
Thousands of containers are lost overboard every year containing lots of the junk you buy from overseas.
Where can I buy this red paint?
Anyone knows the name & model # of this red paint?
I thought the ship was really happy to see someone the whole time
Big ahipa go faster than small boats just as a tiny speedboat effortlessly overtakes it 😂
No anymore, the new ship no longer has the bulbous bow, they realized that at highier speed no longer help the ship speed and save fuel it increase the fuel conamption consumption
Bulbous bow also know by the name of its inventor...Inui Bow
I knew half of this
03:38 "should" doesn't mean "must" or "will", so it generally get thrown into the ocean, anyway. It just depends on if someone's looking.
Ultimately relates to bigger profits for the owners
My dogs bulbous looks very similar to the ships 😂😂
Explained everything clearly! except the subject😂
Big ships are faster than smaller ones? I don't agree with that. I have both a 12' Smoker Craft and a Waverunner that could prove otherwise.
Nuclear power would be ideal for cruise and cargo ships
😂1:16. 😂😂😂😂did he say savings for customers,. Shut the FRont Door
Fact: shipping is responsible for a substantial amount of global warning through greenhouse gas emissions and has escaped most regulation and efforts to reduce that impact. It is the slowest industry to adapt measures and take responsibility for their part in causing global climate change.
So I’m now no wiser about what’s inside that bulbous thingy up front
This is for extra cargo!
That’s nice that there’s an international “agency” to deal with trash from ships… but who is going to enforce it? If a cruise ship or cargo ship dumps all their waste in the middle of the ocean, who is going to know? It’s a good idea in theory but doesn’t work in practice I fear.
I'm sure the ships have to produce receipts to the IMO proving they recycled or properly disposed of a certain amount of waste. Dropping of scrap metal and aluminum and plastic probably actually will pay the ship, which will also need to be filed for tax purposes. But if the IMO designates that they need to do this I'm sure the ship has to prove they did it. Not to mention if the company could lose their license to operate if they don't it's not likely an entire crew will just disregard it. Someone is going to report something. I would.
@@JesseJ588Princess Cruises was busted when a crew member quit and reported them to authorities.
I think these days, though, operators see trash and/or food waste, as potential sources of energy. Carnival Corporation is using digesters filled with bacteria to reduce food waste to liquid waste that can be treated alongside wastewater. Royal Caribbean is implementing a new system that uses microwave-assisted pyrolysis that converts waste to gas that can be used to power the engines.
Very good video.
Thank you very much!
GOD DAMN THAT BULGE
Huh…. Thought it was Sonar lol. I’m mainly into cars but have been getting into planes and ships lately
"Hovercrafts...".... No. Craft is at once both singular and plural. One should never put an "s" on the end of "craft".
this is misleading. At the start you said big ships are faster than small boats, show an image of a planing hull boat. When its a displacement hull, the bigger the faster but planing hulls will always be able to go faster
3:12. They dump the waste in Davy Jones Locker
I thought the ship 🚢 was delivering a baby ship 😊
I dont know why but seeing barnacles makes my body itch
the bulbous bow is actually a sonar
Antifouling paint contains tin, NOT copper. Tin paint is now banned in many ports so less toxic paints are being developed.
Copper antifouling paints have been the industry standard for decades.
The bulbous nose was found by Jacques Cousteau the diver when he fitted a viewing area to his own ship
🤦♂️
J. Cousteau had an underwater vision-ball built in front of his research ship, I think a former French mine-sweeper, and found out this gave the ship a more pleasing sailing by that.
Ummm, wrong. Please google it.
Questioning mind 😊
I wonder why large sailship are not equipped with a bulbous bow?
Ships are as fast as the ship builders care to design and build....having nothing to do with size. Some high speed Ferry's go 80 knots, because those high speed ferry's were designed to go that fast. Max speed is NOT dependent on size.
That's why we have super sonic boats...not. Dude, if you don't know what you're talking about, just STFU.
The most inspirational video of personal growth and commitment I've ever watched. Congratulations on doing your very best and not giving up when it seemed easier than continuing on. My heart was truly touched!❤ This is a top-notch video. You are an inspiration, and I hope you know what an incredible and special video you have made. Thank you so very much. This whole process is something to be proud of!!
Several of the comments and images are totally misleading.
QM2 is an amazing ship. She is in the beginning of this video 🫡
ngalor ngidul
Cost savings for customers? More like increased profits for shareholders.
"A longer waterline length allows the ship to take advantage of the greater waterline length to achieve higher speeds...". Um... Yeah... But how does a longer waterline length permit higher speeds?
Is that a bulbous bow or are you just happy to see me?!