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The Shell
Приєднався 4 бер 2021
Videos about the engineering that surrounds us.
Topics covered: aircraft, land and sea vehicles.
Disclaimer: Some of the videos are produced exclusively for this channel, others are adaptations of my other channel in Brazilian Portuguese, called Integrando Conhecimento.
About me: I have a PhD in Electrical Engineering
I also have another channel about engineering, in portuguese, with +800k subscribers.
Logo Description: Shell refers to vehicles. In the symbol, the triangle is the shell, made of metal, and the circle in the center is the pilot.
Topics covered: aircraft, land and sea vehicles.
Disclaimer: Some of the videos are produced exclusively for this channel, others are adaptations of my other channel in Brazilian Portuguese, called Integrando Conhecimento.
About me: I have a PhD in Electrical Engineering
I also have another channel about engineering, in portuguese, with +800k subscribers.
Logo Description: Shell refers to vehicles. In the symbol, the triangle is the shell, made of metal, and the circle in the center is the pilot.
The giant concrete ships
During the First and Second World Wars , with the war industry running at full throttle, steel became increasingly scarce. Much of it was used for building ships. To overcome this shortage, the United States Maritime Commission ordered dozens of experimental concrete ships.
Despite their advantages-being simpler to produce, using more abundant materials, and being resistant to rust-why aren't they manufactured on a large scale today? Why aren't the massive cargo ships made of concrete?
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Note: "The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement."
Despite their advantages-being simpler to produce, using more abundant materials, and being resistant to rust-why aren't they manufactured on a large scale today? Why aren't the massive cargo ships made of concrete?
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Note: "The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement."
Переглядів: 30 341
Відео
The problem with the A-10's uranium ammo
Переглядів 48 тис.14 днів тому
The iconic A-10 Thunderbolt II (Warthog) is an aircraft built around its massive 30mm Gatling-style autocannon, capable of slicing through armored vehicles with ease. The secret lies in its depleted uranium ammunition. But what makes this ammunition so effective? And does using uranium turn the weapon into a 'cancer cannon'? Note: "The appearance of U.S. Department of Defense (DoD) visual infor...
Big Wind and the Kuwait Oil Fires Disaster
Переглядів 1,6 тис.Місяць тому
This is the story of how the oil well fires in Kuwait in 1991 were extinguished. The Kuwaiti oil fires were caused by the Iraqi military setting fire to more than 700 oil wells. The Kuwaiti oil fires, ignited by the Iraqi army’s scorched-earth tactics during their retreat in the Gulf War, created an unprecedented environmental catastrophe. Over 700 oil wells burned, casting a thick, dark smoke ...
Why is NASA's spacesuit so bulky, while SpaceX's are so sleek?
Переглядів 1,7 тис.Місяць тому
Do you know why these spacesuits are so bulky compared to SpaceX's?
The building without glass windows in NYC
Переглядів 3,7 тис.3 місяці тому
The story of a windowless building constructed in the 1970s, known as Project X. It was built to withstand a nuclear attack and is shrouded in espionage. In New York City, a windowless skyscraper stands out among other buildings due to its unique design and purpose. Constructed in 1974 for AT&T, it was built to withstand a nuclear attack, with reinforced concrete walls and towering, fortress-li...
Why do big ships have this bulb?
Переглядів 7413 місяці тому
Subscribe, it's free! Have you ever wondered why there is that nose at the tip of a ship's hull, just below the waterline? When a ship moves, it expends a certain amount of energy to push the water in front of it out of its way, generating waves that propagate along the hull. Among the different types of ships’ resistances, this wave-making is one that causes the greatest drag. This is where th...
The manhunt for the North Korean submarine spies
Переглядів 8733 місяці тому
On September 13, 1996, a North Korean submarine mission to spy on South Korean military bases went catastrophically wrong. The crew deployed three elite spies but, upon returning to retrieve them, found no one waiting. After multiple attempts to return to international waters, the submarine became entangled in seaweed and ran aground near a South Korean city. The stranded 26 crew members attemp...
WhistlinDiesel has a problem with the Cybertruck
Переглядів 4,8 тис.3 місяці тому
Cody, from the WhistlinDiesel channel, recently pushed a Cybertruck to its limits. It’s not a test that follows industry standards, but they exposed some critical flaws. Cody from WhistlinDiesel recently took the Tesla Cybertruck, specifically its high-performance “Cyberbeast” version, through a series of unconventional tests, uncovering strengths and notable flaws in its design. The Cybertruck...
If you drink, don't steal a military truck
Переглядів 9 тис.4 місяці тому
On July 18, a 26-year-old man broke into the Gallipoli Barracks military base, one of the largest in Australia, and stole a military truck. Rheinmetall MAN HX40M Note: "The appearance of Australian Department of Defense (DoD) visual information does not imply or constitute DoD endorsement."
The largest driverless train in the world
Переглядів 19 тис.4 місяці тому
In Western Australia, Rio Tinto’s AutoHaul project operates the world’s first fully autonomous long-distance heavy-haul rail system, a 2.4-kilometer (1.5 miles) train that transports iron ore from mines to coastal ports over 400 kilometers (250 miles) away. Developed with Hitachi Rail STS and launched in 2018, this system includes 221 driverless locomotives that cover over 1,900 kilometers of p...
What happens if someone shoots at the tires of a combat vehicle?
Переглядів 6 тис.4 місяці тому
If you shoot at the tires, does it render the wheeled combat vehicle useless? Combat vehicles with pneumatic run-flat tires are specially equipped to withstand challenging battlefield conditions and potential tire punctures. Unlike standard tires, these military-grade tires are reinforced with durable rubber rings that prevent collapse when punctured, allowing the vehicle to keep moving. This i...
The green submarines of North Korea
Переглядів 791 тис.5 місяців тому
Did you know that North Korea has green submarines? This unusual color scheme distinguishes North Korean submarines from most, which are black, as black is standard for reducing visibility against the sea surface and preserving durability. Green submarines operate in shallow waters, particularly near adversaries Japan and South Korea, while smaller submarines patrol the safer Yellow Sea near Ch...
US Main Battle Tank evolution: 1st to 4th generation
Переглядів 1,6 тис.5 місяців тому
US Main Battle Tank evolution: 1st to 4th generation
Aircraft carriers in unusual places
Переглядів 1,5 тис.8 місяців тому
Aircraft carriers in unusual places
Icebreakers don't break ice the way you think
Переглядів 1,1 млн10 місяців тому
Icebreakers don't break ice the way you think
Anduril's AI drones, the most advanced in the US
Переглядів 5 тис.11 місяців тому
Anduril's AI drones, the most advanced in the US
How does a submarine submerge and surface? And how does it not capsize?
Переглядів 5 тис.Рік тому
How does a submarine submerge and surface? And how does it not capsize?
A highly unusual helicopter | Syncropter
Переглядів 26 тис.Рік тому
A highly unusual helicopter | Syncropter
Now you can have your own electric car manufacturer
Переглядів 3 тис.Рік тому
Now you can have your own electric car manufacturer
The largest deal in gaming history | Microsoft buys Activision
Переглядів 369Рік тому
The largest deal in gaming history | Microsoft buys Activision
India's moon landing - oversimplified
Переглядів 1,3 тис.Рік тому
India's moon landing - oversimplified
HP scam: it is manipulating your printer to sell more ink
Переглядів 4,2 тис.Рік тому
HP scam: it is manipulating your printer to sell more ink
Goodbye sandbags? This is how fortifications are built now | HESCO Barrier
Переглядів 750 тис.Рік тому
Goodbye sandbags? This is how fortifications are built now | HESCO Barrier
Biden explains to Trump how ships are stretched
Переглядів 916Рік тому
Biden explains to Trump how ships are stretched
The big problems with putting the driver at the center - Tesla Semi truck review
Переглядів 2 млнРік тому
The big problems with putting the driver at the center - Tesla Semi truck review
rip the homie... fly high, Warthog...
They would sink like a cement block.
As a child I remember seeing one sail past me near Oak Island, NC (around 1960). It left a lasting impression on me.
There's a balance between the best product to use, versus the only product you can afford at the time.
There's some correlations here to concrete pool construction and Shotcrete projects. Lots of steel reinforcement, small aggregate, limited added water, high level placement consolidation. Racquet ball, hand ball court walls are/were built with lots of pencil rod & wire, covered with Portland cement rich plaster (concrete grout basically).
I had no idea about this. Thank you
I wonder what the math looks like if you use Glass fiber reinforced concrete (GFRC)?
a spy stealing plans for concrete ships doesn't mean the germans wanted to build them. maybe they did, but to me it's just as likely they wanted to know the weaknesses to properly target them.
It is said that if you are crossing an ocean, the best ride you can get is in a ferro boat. The worst is in an aluminium or fibreglass one. This is because of the weight of the vessel. I believe the worlds largest barge is made of concrete. It was made in France and is used in conjunction with an oil platform off Africa.
LAME
I never had heard of it.
Seems like it could be viable for a houseboat that doesn't go very far.
Your trying to $ell Gullible Warming and talking about heavier Ice Breakers being planned. So The Gullible Warming Narrative is getting ;crushed/ locked in the ICE! Al Galore said their would be no more snow in the year 2,000. So what is that white stuff outside now!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A lot of research has gone into this video !
They are not made with concrete. The real name Farrocement. The process uses 2 or 3 different sizes of sand. Zero rocks. The process uses lots of pencil rod, very small rebar. Then expanded metal lath, you call it chicken wire. The object is to get the pencil rod and 5 layers of metal lath as thin as they can squeeze them together. A 65 foot cement boat we plastered had all 5 layers in less the a 3/8 inch thickness. The cement is the filler. If you want a book written on Farocement contact me I will give you the book. It was written in the late 70’s. We were a plastering company in the Portland area and we did 10 boats . What killed this process was the price of the rod and wire. The price shot up and it became cheaper to build out of Steel. The big company in California was Daniel cement boats. We traveled to California and met with them. At that time they had to get the sand only from a plant in Canada.
The ferrocement process is used only for smaller boats. The large ships mentioned in the video were made of reinforced concrete. I mention some of the books used in the video itself, but here they are: Survey of experience using reinforced concrete in floating marine structures. Ship structure committee. 1984. apps.dtic.mil/sti/pdfs/ADA162559.pdf Concrete ships historical notes concerning them and a discussion of the problems involved in their construction. University of Illinois. 1918. www.ideals.illinois.edu/bitstream/handle/2142/51651/concreteshipshis00kirc.pdf Concrete Ships. University of Rhode Island. 1978. digitalcommons.uri.edu/cgi/viewcontent.cgi?article=1120&context=ma_etds
A ship that floats like a log can reduce the weight penalty with concrete ships while swapping trains in one hour and would allow small islands to trade with the world.
i don't understand. do you mean car floats/rail barges? they already exist. i live in alaska and our railroad isn't connected to the rest of north america, we have a few barges with rail track on them to move rolling stock from seattle to here.
A canoe trip in Waupaca, Wisconsin had several concrete boats that took the customers to the start of the trip.
It's just not boaty , , *** 👍 , , ferro boat s rust from day 1 , lime and steel don't mix , with salt water , ❤. , .
That’s not the only problem if the A10 fires continuously it will fall out of the air from lack of lift. “Edit if it fires for long enough that is.”
5:17 i thought that was the millenium falcon for a second
At 03:11, I like how you danced nicely around saying that (unhelpful for UA-cam videos) "H" name.
"The moustached corporal" 😉
I thought the elves hopped off of the ship with sledge hammers...
What is that horrible noise in the background ? Is that 'music' ? Spoils what could be a great video.
There have been developments in *Basalt* reinforcement. I think there are possible advantages for basalt in concrete ships.
That ship is a maritime hero.
nice. i expected that such boats would be way more than twice the weight of steel ships
UMO had a concrete canoe competition every year for their engineering students.
Powell River British Columbia. That's where the break water is in Canada ! Please come visit and see them !! It's a pretty amazing sight 😊 the whole sunshine coast is beautiful ! I promise you will not be disappointed. Lives here a long time and I'm still in awe when I see it ❤
Very nice of you to promote your beautiful location, some tourism is beneficial though don't wish for too too much.
The Guest Dock is next to the ferry terminal. That was a bouncy night. The Sunshine Coast is nice. Desolation sound, Princess Louisa, Squirrel Cove Lancelot Inlet. Great places to visit. Seeing the Sister ships to the Palo Alto was interesting as well. The Palo Alto is at Rio Del Mar, Santa Cruz County, California. Well what’s left of her. She is breaking up in the surf.
iv been l0king for info about these things, but its either hard to come by or im just lazy, good video 🐷🐖🐽
There really isn’t much material about them, especially technical data. The books are usually from the 1970s-80s, and some are even older than that.
My 99 year old dad was a Merchant Marine officer in WW2. He was in port in the summer and concrete ship was in port with a friend from MM Academy on board. Dad visited his friend on the concrete ship. Dad wanted to see the engine room and while below a V1 hit the concrete ship destroying his friend's cabin. Dad told me the did not run concrete ships in cold waters and winter they were mostly used in the warm Caribbean. Dad said the only thing liked about the concrete ships is they had better sound insulation
παρα πολυ καλη ιδεα γιατι δεν κτιζουνε και τωρα τετοια πλοια? το κοστος τους δεν θα ειναι ουτε το 1/5και οταν βγαινουν εκτος να τα βυθιζουνε για τεχνικους υφαλους να γινοντα κατοικιες για ψαρια/αριστη ιδεα
FYI these all are ferro cement boats and ships. So I reality actually steel boats were cement is used.
There was a period when ferroconcrete was a popular choice for homebuilt sailboats. Until people gained experience with them. They used inexpensive materials but were labor intensive. And the problem was that while they were strong and durable, if built properly, it was impossible to determine whether they were built properly from an external inspection.
If they are labour intensive,then they are expensive
@@vincentkosgei7166 That depends on how much your time is worth...
In the 1970's, a group of us constructed a ferro concrete yacht. It was ready for plastering when gale force winds bowled it over. We stood it back up but the beautiful lines were no longer. I pulled out of the build as my GF was pregnant. The boat got finished, looked okay and spent the next few years as a dive boat in the Pacific.
@vincentkosgei7166 Labor intensive only in the plastering phase, and unskilled labor.
@@howardsimpson489 Any idea if it is still afloat or now a dive destination?
The wreckage of one ship is located a few yards off the shore of sunset beach in Cape May, New Jersey.
There's also a wreckage in Galveston Bay
lol SO MANY PEOPLE NEW HOW IT HAPPENED BUT STILL WATCHED IT LOL WHY DONT YOU ADMIT LIKE MYSELF AT 63 THAT THERE ARE QUITE A FEW TECHNIQUES THERE I DID NOT KNOW ABOUT SO UNLESS YOUR INSECURE ABOUT YOUR INTELLIGENCE OR JUST PLAIN UP YOURSELF ... MOST PEOPL DONT KNOW EVERY THING BUT I KNO0W IF YOU RESPOND TO A TITLE AS IF ITS STUPID NORMALLY YOU SHOW YOURSELF AS A FOOL .THANKYOU FOR INFORMATION MUCH WISER 63 YEAR OLD NOW .
Very interesting . Thanks a lot.
At 01:40 the list of ships includes one named SS Francois Hennebique. Where J-L Lambot (00:39) was the father of Ferro-Cement - Hennebique was the father of Reinforced-Concrete. Hennebique , or his licencees, built thousands of concrete structures in the UK including the famous Hennebique Bridge at Brooklands Circuit, Weybridge, the first purpose-built banked motor-racing circuit in the world. That bridge still survives, as does another Hennebique construction, the footbridge crossing the railway lines at Kew Gardens station.
Cool, thanks for the story.
@@theshellchannel Subscribed, I will check out to see if you have already done one of Ice Air Craft Carriers. After promising scale tests and the creation of a prototype on Patricia Lake, Jasper National Park, in Alberta, Canada, the project was shelved due to rising costs, added requirements, and the availability of longer-range aircraft and escort carriers which closed the Mid-Atlantic gap that the project was intended to address.
bro from 3:11 to 7:16, you used a so complex vocabulary for my brain that i started learning something new
I wonder how the cost calculations would change if one of these were built today with a nuclear powerplant in place of a diesel one?
Still only roughly half as efficient, so would still be worse than the steel one. My question would be, what about if you factor in maintenance? Long term isn't it cheaper to have 2 concrete ships for the same cargo load as on steel one given they last 50+ years?
@ Good points! So much has changed since these ships were built that I think to compare cost estimates over a long term a completely new study would have to take place. The advancements in material technologies over the past century are remarkable and then some.
Another advantage is that you would no longer need to look where you were going. Leaving port, you could just ram everything out of your way, then carry on as if nothing had happened. LOL
@@wilsjane "Be one with the port. You are the port. You are feeling like a mobile pier. Where ever you travel in life, you are your rock." - Shia LaBeouf
give a10 apfsds
There's a small one abandoned on a river bank near where I live here in the UK
Where exactly?
xd.
Ironically AI has made me do more research than less of it. Because ever so often I see something like this and question if it’s true or not.😂
Of all the things I learnt about WW2, this was somehow never one of them, thanks for the video.
Project Habakkuk?
if you thought concrete ships are cool, look up pykrete if you haven't heard of it. such a strange idea, it'll give you brain freeze for sure
the amount of people that are trying to rationalize american crimes agains humanity is concerning
It's hard to hate objects that are that ugly. It's like an achievement in and of itself.
This is one of those videos that makes you check to make sure it's not April 1st.
Sucking his hands on, not all computer.
There can't be that much ice! We have Global Warming. Someone's been lying to us.
Love your content keep it up❤❤