Why Do MASSIVE Ships Play Chicken?

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Күн бұрын

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@PaulFisher 2 жыл бұрын

0:18: “they will collide and annihilate each other” I think this specific outcome only happens if you have one car and one antimatter car.

@a.d1775 2 жыл бұрын

well if you have some anti matter and some regular, pro matter surely you'd just get harmless regular matter!

@kaletriton 2 жыл бұрын

Lol, when he used the term "annihilate", I thought of matter and anti-matter too.

@Welv1987 2 жыл бұрын

Or if they go near the speed of light

@seraphina985 2 жыл бұрын

@@Welv1987 To be fair at that point the plasma that is the leading edge of the vehicle mixed with the air ahead of it will be undergoing interesting interactions well before that. That is to say you just made a fusion car which is currently fusing itself with the air of the atmosphere. Suffice to say it will no longer be a car in very short order. As for exactly how these shenanigans look is an interesting thought as towards the front of the car it will most likely be predominantly atoms from the car actually fusing much of which are Iron or heavier so it would probably be a net loss of energy there. Probably wouldn't want to be viewing it from the outside for sure though the leading edges will mostly be the atmosphere participating which would give off plenty of high energy photons and such I think you would likely be very very dead if in line of sight of that turns out X-Rays and Gamma rays are bad for ones health in high doses.

@jonathanschaffer2594 2 жыл бұрын

“Assuming a spherical car in a vacuum…”

@tiagocunha4821 2 жыл бұрын

"Everstuck" lmaoooooo

@could_possiblybe_thane07echo 2 жыл бұрын

0:59 almost because everstuck

@minanminan9484 2 жыл бұрын

Lmao

@traveliscool9360 2 жыл бұрын

Lol

@UnidentifiedStapler 2 жыл бұрын

Yeaa.... Evergreen

@nonna_sof5889 2 жыл бұрын

Ah yes, the No Fucks and Ever Deeper.

@predator0010 2 жыл бұрын

I've seen this first hand as a deck cadet on a container ship. It was scary first time I saw it, but then I learned its standard procedure.

@Genuinespaceman Жыл бұрын

546 likes and no comments? Lemme fix that..

@fredbloggs8072 10 ай бұрын

On large modern ships, are these maneuvers carried out autonomously by computers (accurately monitoring positions, velocities, water pressures etc), or are they still done by experienced human crews?

@McEnt-x7g 9 ай бұрын

@@fredbloggs8072experienced human (pilot) . Witness this effect as cadet too at savannah, usa the pilot giving order to the other vsl’s pilot 😊

@netsailor 2 жыл бұрын

There is some reason special channel pilots are required in places like the Kiel Kanal.

@boRegah 2 жыл бұрын

'Schland!

@Chrischi3TutorialLPs 2 жыл бұрын

Because we are talking about Germany here, and in Germany, you can't just take your ship and move it past another one using physics. What are you, a captain?

@netsailor 2 жыл бұрын

@@Chrischi3TutorialLPs as far as I know Pilots are mandatory in a lot of other major shipping channels from a certain size of ship upwards.

@blahfasel2000 2 жыл бұрын

@@netsailor The Kiel canal is the only canal that I know of though that not only requires a canal pilot but also a canal helmsman for ships above a certain size (and/or under certain wind conditions). Guess that's what it takes to be the most frequented artificial waterway in the world (the Kiel canal sees about as many ships each year as Suez and Panama canal combined!).

@Olof123 2 жыл бұрын

Same here in the Houston ship canal, pilots make seriously good pay too.

@mikeflowerdew7877 2 жыл бұрын

The same thing can happen with narrowboats in canals (this is in the UK), and this would be an extremely useful tutorial for that. It was quite a shock the first time the bow started to pull out after passing another boat, and I wasn't expecting it 😄 Thankfully the stakes are a bit lower when your boat is "only" 60 feet long and moving dead slow, it's all part of the fun really

@kimpatz2189 2 жыл бұрын

Theres a training for captains using the narrowboats as a simulator. Due to the power to weight ratio being largely the same, both the narrow boat and the large cargo ship can behave the same way especially on canals.

@Tinhare 2 жыл бұрын

If you watch the old working boats it’s how they pass. Don’t try doing it with most leisure boaters though as they do think it’s a game of chicken.

@mikeflowerdew7877 2 жыл бұрын

@@Tinhare It's not about playing chicken, it's about knowing the best time to head to the side, which is certainly later than I first assumed. It's never a bad idea to have some idea of how the physics works

@Tinhare 2 жыл бұрын

@@mikeflowerdew7877 That was my point.

@charlestowler902 2 жыл бұрын

While a typical narrow boater won't wait until the last minute to move off the centre line of the canal as per the video (which is probably for the best), the last bit of it, the 'self centering' effect as the stern's pass each other is very noticeable...

@tireballastserviceofflorid7771 2 жыл бұрын

It's funny to see this video title. I lived on St. Thomas for 11 years. Used to listen to my marine radio for fun. You would hear the same argument weekly between some Russian capitan and another say Philippineo. The Russian guy would start by being stupidly rude informing the other ship to move or else. The other ship would say I have the right of way. Then usually the Russian would go full speed while cusing in Russian screaming on the radio. Eventually the coast guard would chime in and inform them both to adjust course and to shut up. This was weekly if not more often.

@zacklp3844 2 жыл бұрын

I dont think it's spelt Philippineo

@tireballastserviceofflorid7771 2 жыл бұрын

@@zacklp3844 Sorry. A boat capitan who is from a pacific island with a funny Asian Spanish accent. My bad.

@daleryanaldover6545 2 жыл бұрын

@@tireballastserviceofflorid7771 As a Philippine national with Russian friends, I certainly could imagine the whole story vividly.

@milwaukeebrewers6337 2 жыл бұрын

I believe it by the Russians being aggressive and Filipinos being reasonable and polite. I'm actually here in the Philippines as I type lol... nicest people ever.

@iamlostintime3343 2 жыл бұрын

Hey! Shut the fuck up! - Coast guard

@rando4687 2 жыл бұрын

I never knew that this was a maneuver that ships took. The more you know I guess.

@Michaelonyoutub 2 жыл бұрын

I actually expected from the title for this video to mention the Halifax explosion in 1917 where two ships in halifax tried to use the narrow channel, one leaving the port, one entering, at the same time, which lead to both playing chicken and inevitably crashing into each other. One of the ships was packed full of explosive to be shipped to France for WW1 so when the ship crashed and exploded it leveled the city.

@Lowkeh 2 жыл бұрын

Just a little ping to let you know (in case you didn't) that Casual Navigation recently put out an excellent video about the Halifax incident!

@Michaelonyoutub 2 жыл бұрын

@@Lowkeh Just checked it out, thanks

@avramnovorra 2 жыл бұрын

I never knew about this careful, coordinated dance but damn it is impressive to know that everyone involved in a Texas Chicken is participating in a calculated move.. now i can look and sound clever in front of my peers in thee vent we see 2 ships pulling this off

@JaykPuten 2 жыл бұрын

That's a good way to put it... Instead of Texas choreographed ballerina dancing, it's called Texas chicken instead of "coordinated super advanced and skilled canal boating"

@Bill_N_ATX 2 жыл бұрын

I remember seeing this as a kid growing up along the Ship Channel. It’s only 550 feet wide and watching these tanks go at each other was amazing. One note how ever. They do screw up occasionally. It doesn’t happen often though. The Houston Pilots are very, very good. Especially those that take ships up The Buffalo Bayou past the Lynchburg Ferry and into the area of the Turning basin. It’s twenty miles of refineries and chemical plants, with a few car carriers thrown in for good luck. The majority of the container traffic goes to one of two large container facilities that are off the Trinity Bay and not so far up the channel.

@womble321 2 жыл бұрын

It's the same for going under Potter heigham Bridge. You gun the engine and water pressure keeps you straight. You can't steer because the stern needs to move in the opposite direction and would hit the bridge. In a cross wind speed is essential.

@MGSLurmey 2 жыл бұрын

I love that a considerable amount of large ship piloting basically boils down to sheer brute force like a toddler would attempt.

@williamstrachan 3 ай бұрын

@@MGSLurmey tbh, Potter Heigham bridge is the opposite of large ship piloting - nothing with more than 6'6 air draft has a prayer of getting under there and even then it's heavily dependent on tide and rainfall!

@williamstrachan 3 ай бұрын

Never had the good fortune to go under PH, but I felt the effect under Ludham bridge!

@TomClarke1995 2 жыл бұрын

I learned this stuff at the Great Lakes maritime academy, so it was interesting seeing a video talking about these hydrodynamic forces.

@stevebeamer3594 2 жыл бұрын

My wife's uncle was a pilot in NY harbor. He had told me about this maneuver and also stated that it would increase the depth of the canal enough for both ships to pass each other even if either side of the channel wasn't quite deep enough for them to get out of the channel.

@wrenchdoozer 2 жыл бұрын

Is this done by pilots from the local authorities who know the channel, or are individual ships expected to have personnel able to do this?

@chattw6885 2 жыл бұрын

yes

@grondhero 2 жыл бұрын

Whoever is on the bridge. If there were pilots, there'd have to be additional boats for each vessel.

@jellef4704 2 жыл бұрын

Pilot gives orders to the bridge crew , captain is ultimately responsible and can ignore the pilots local knowledge. It's required in most narrow channels to have a pilot, especially in places as narrow as in the video. In my river, we don't do this, we check in with traffic, monitor the ais for river traffic, and communicate via vhf. We have a few wide 'basins' to wait for opposing shipping traffic so we don't meet at the narrow part of the channel.

@loberd09 2 жыл бұрын

Yeah. I grew up on the houston ship channel. What they didn’t mention is the average depth of Galveston bay is about 2m (6ft) and the ship channel is something along the lines of 10-20 m deep. They are required to have pilots on board ands the pilots are very familiar with having to do this. My dad wasn’t a port of houston pilot but he went to school with many of them and remained friends. I seem to remember most of the groundings were caused by mechanical malfunctions or a ship interacting with barges.

@loberd09 2 жыл бұрын

@@jellef4704 yeah pilots are required except for barges (even though they have a “pilot”). I think there’s 2 turning basins in the houston ship channel. It’s a crazy place. I think there’s a ship entering/exiting every 6 minutes. And it intersects the intercostal waterway. As a kid I loved hearing the ship traffic at that intersection

@lingSpeed 2 жыл бұрын

Night driving on unlit 1.5 way roads (barely enough for 2 cars to pass each other) kind of works the same. There is a force pulling the cars together - natural human tendency to steer toward a reference point if no other points are visible (related to tunnelvision). So making way "the last second" works out better. Not advising playing chicken here, that's bad ofc. But if you make room too early it can make the other driver take more road, even if he did not intend it.

@xponen 2 жыл бұрын

driver should stare at the road line and avoid staring at headlights because they will drive toward the headlights. (On unlit road the incoming headlights from the opposite lane will appear to move further sideways as it get closer, thus creating an illusion that the car the driver is in is moving off course.)

@danielguy3581 2 жыл бұрын

This reminds me that one notable winner of a prize going to the oddest published book title of the year was 'How to Avoid Huge Ships'. This is probably puzzling to this channel's creator, for whom it would seem a perfectly sensible subject and title.

@chuckhood9659 2 жыл бұрын

I performed the Texas Chicken once as the OOD on USS SAN JACINTO (CG 56) while visiting Houston. While we regularly deal with some of these effects during underway replenishments, it is not something naval vessels would normally practice. We did simulator training on the maneuver prior to the visit. Briefed the maneuver during the entering and exiting Nav Briefs and discussed with the pilots in both instances. On the outbound we did encounter another vessel in the channel and had to perform the Chicken. While a little unnerving for those new to it, it obviously worked as intended.

@collinscody57 2 жыл бұрын

I live about as far away as you can get from the ocean on a navigable shipping river so I find this all very interesting.

@simonshotter8960 2 жыл бұрын

How far?

@collinscody57 2 жыл бұрын

@@simonshotter8960 about 1200km and the Rockie mountain stand between me and the pacific. Also at about 700m in elevation so there is alot of rivers but there all small before they flow together to make bigger rivers

@simonshotter8960 2 жыл бұрын

@@collinscody57 you’re in the 1%. Most of us live within 150km of a coast! I was just saying today here in the UK, it’s blazing and was nice to only be 15 mins from the sea and thought then I wouldn’t want to be that far from the coast. Kudos to you man. At least the Rocky’s are close ish. ⛷

@timfagan816 2 жыл бұрын

@@collinscody57 make your mind up you using kms or miles? I'm confused? I can use both! But pick a measurement and stick with it mate :)

@kjw79 2 жыл бұрын

? Elevation is commonly measured in meters. Distance in kms.

@matthewjohnson6938 2 жыл бұрын

Me, a Houstonian seeing CasNav talk about our ship channel. "YEEHAAWWW!!!"

@jimsvideos7201 2 жыл бұрын

"The trick to playing chicken, Mister Ryan, is knowing when to blink."

@Chelo367 2 жыл бұрын

This is the best, most informative and easiest to understand explanation of "ships go turny turny in channels" I've ever had the pleasure of receiving. Thank you so much for the vídeo! You've earned my subscription

@JaykPuten 2 жыл бұрын

So fluid dynamics...was my initial guess But learning the specifics makes sense, vehicles traveling in water behave different than those on ground than those in air, as looking at high and low pressure areas reminds me of a planes wing and how it stays in flight, except it's using that concept flipped on its side, but in a non compressible medium (like how hydraulic brakes or buffers work vs how they don't work when there's air bubbles since air is compressible....to a point) Awesome video! Cool that Texas chicken doesn't end how you'd assume Texas chicken to end(with a giant car crash and a gunfight... I'm kidding to all Texans out there of course)

@Luke55827 2 жыл бұрын

Texan here, you’re pretty spot on.

@JaykPuten 2 жыл бұрын

@@Luke55827 I forgot fireworks... Tho that's American and maybe not uniquely texan... Unless they're big awesome fireworks, and after some Texas chicken the winner gets some Tex/Mex food Or maybe Im thinking with my stomach... Some Texas barbecue chicken tacos.... That's my second thought when I hear Texas chicken is some good Texas BBQ with some tortillas for bread

@markusp9569 2 жыл бұрын

In Aviation you have Ground Effect, so if you´re close to touchdown you will be pushed away from the ground. Same concept, as with the bank here

@topethermohenes7658 2 жыл бұрын

@@markusp9569 interesting, it never occured to me that ground effect is similar to the bank effect in ships. And ground effect is pretty strong especially for high wing aircraft

@maruzura3658 2 жыл бұрын

Did you die?

@peggyt1243 2 жыл бұрын

My father told me about this maneuver decades ago. He retired in 1970 so at least 52 years ago. This maneuver was done in the Welland Canal.

@RupertFoulmouth 2 жыл бұрын

Does it make a significant difference if one ship is particularly longer than the other?

@accursedcursive4935 2 жыл бұрын

In that case the vessel is likely smaller across all dimensions, and thus it may be possible for the larger ship to travel much closer to the middle since less of a gap is needed for the smaller ship (which experiences less bank effect due to its size)

@Blox117 2 жыл бұрын

yeah the longer one gets stuck while turning a bend and runs aground

@stefthorman8548 2 жыл бұрын

i would assume, the longer one stays closer to the middle(but still swerves), and is going an bit slower then the smaller one. this is just an guess.

@ianhollands1641 2 жыл бұрын

On the French canals ,we frequently encountered commercial bargesin narrow canals . These were at least 280 ton to our 20. We would be pushed by the current all over the place . We never bumped but it was more by luck than judgement. The worst bit was just as we were nearly clear and we were sucked out from near the bank.. Exactly as described in this excellent vid.

@tombuster Жыл бұрын

I kind of had an idea of what was going on from the thumbnail, but the explanation helped put things into perspective! Great video!

@Quagmire1986 2 жыл бұрын

Everytime I watch your content, I’m flooded with new knowledge

@AndyUK-Corrival 2 жыл бұрын

Really interesting, I have not heard of this but it makes perfect sense. Be great to see drone footage of this actually happening.

@lake5044 2 жыл бұрын

Do all ships swerve to the right in such maneuver? It would be a disaster if some ships have different swerve conventions...

@RoBert-ix6ev 2 жыл бұрын

Ships (and aeroplanes) on a head-on collision course, both ALWAYS alter course to the right. They pass "red on red"

@lake5044 2 жыл бұрын

@@RoBert-ix6ev Thank you! 😁

@michaelbamberger882 2 жыл бұрын

Yes, boats pass 'port to port' so they always turn starboard, meaning that their port side will pass on the port side of the other ship

@ChrisBigBad 2 жыл бұрын

@@RoBert-ix6ev Aeroplanes might do, unless TCAS tells them not to. Then TCAS (having communicated (!) with the other airplane's TCAS) is to be followed. Or you go boom. en.wikipedia.org/wiki/2002_%C3%9Cberlingen_mid-air_collision

@thomasdalton1508 2 жыл бұрын

@@ChrisBigBad I think TCAS only provides vertical resolutions, so it won't tell you to turn left or right, just climb or descend.

@m0llux 2 жыл бұрын

"Everstuck" I just spit my coffee. Thanks!

@user975bg 2 жыл бұрын

You are my ASMR King! When I can’t sleep, I put on one of your videos and they work like magic! They are also very interesting and informative, as well, even though I have no connection to shipping or navigation whatsoever.

@Toma-621 2 жыл бұрын

Every time I watch a Casual Navigation video I end up binge watching the topic of the video in the real world, so I’ll be off looking up Texas Chicken for 20 minutes 👋

@montikore 2 жыл бұрын

I don't even like the ocean in person and I'm here learning about bank effect at midnight on a Saturday. How did I get here? No one will ever know, but I can't leave now!

@Martin4Mary4Ever 2 жыл бұрын

This is hands down my favorite video yet from you. I love Houston a little more now

@Twidleythegnome Жыл бұрын

I love this, it’s based in scientific understanding of forces, and cooperation being the best strategy The Texas chicken and this video 10/10

@paulburman9972 2 жыл бұрын

WOW, didn’t know any of this, thank you for explaining this fascinating topic.🐳

@etherealessence 2 жыл бұрын

This has to be one of the most stressful maneuvers to attempt

@johnmacdonald1878 Жыл бұрын

If it’s stressful don’t do it.

@syriuszb8611 2 жыл бұрын

"...this is a lighthouse mate, your call" :D

@leopoldiv2341 2 жыл бұрын

"Everstuck", that got me so hard! 😂🤣🤣😂

@yvius3265 2 жыл бұрын

I had to pause the video due to laughing so hard 😂

@waitotong9590 2 жыл бұрын

I know not every invention is an accident, but I like to think that the captains who discovered this technique both wanted to win the bragging rights and didn’t swerve their ships until the very last minute in the Houston Ship Channel. Both captains stared at each other as they barely got through. Then the ships went on with their own paths with their captains wondering how their ships were still in one piece and without a scratch. They told their tale to other captains and soon many adopted this technique. And before you know it, it’s now a professional manoeuvre called the “Texas Chicken”

@Reccis 2 жыл бұрын

An old one i just remembered x) Americans: Please divert your course 15 degrees to the North to avoid a collision. Canadians: Recommend you divert YOUR course 15 degrees to the South to avoid a collision. Americans: This is the Captain of a US Navy ship. I say again, divert YOUR course. Canadians: No. I say again, you divert YOUR course. Americans: This is the aircraft carrier USS Lincoln, the second largest ship in the United States' Atlantic fleet. We are accompanied by three destroyers, three cruisers and numerous support vessels. I demand that YOU change your course 15 degrees north, that's one five degrees north, or countermeasures will be undertaken to ensure the safety of this ship. Canadians: This is a lighthouse. Your call.

@theVoyage 2 жыл бұрын

That was from a radio show, from memory, it didn't happen. it also makes no sense for a conversation to play out the way it did, or for the captain of a navy ship to not know what a lighthouse, something that is intended to be impossible to confuse for something else, is.

@asdsdjfasdjxajiosdqw8791 2 жыл бұрын

Is this why the Suez capacity expanding projects almost all opt for a separate channel for N and S travel instead of one wide channel for both directions?

@user-Aaron- 2 жыл бұрын

Yep - can't collide with ships that aren't there.

@Ricko1Games 2 жыл бұрын

The Suez canal is the limiting factor for ship width. Originally it was designed for two way traffic but the ships were then built to be that wide. History will repeat itself if you build one canal for two way traffic.

@Redicule_research._ridiculous 2 жыл бұрын

Additionally, a separate channel under construction will never impede traffic, unlike work on the one and only channel

@matthewtymczyszyn8948 2 жыл бұрын

When I was a kid I went paddleboarding and got sucked into a little spot between two piers. I think I just found out why.

@beeble2003 2 жыл бұрын

No, that will have been water currents around the piers. Bank effect is only significant when a vessel is close to the bank relative to the size of the vessel itself. To get bank effect on something as small as a paddleboard, you'd have to be within a few centimetres of the bank and, on something as small and slow as that, the effect would be so small that it would have almost no effect.

@matthewtymczyszyn8948 2 жыл бұрын

@@beeble2003 Awesome, thx

@CzechTex Жыл бұрын

Really neat to find out about a maneuver named for the Ship Channel I work. Thanks for the vid, and the suggestion to see this vid.

@seidr9147 2 жыл бұрын

I just found your channel. Superbly made content. I would love you to do longer documentaries too!

@marvinochieng6295 2 жыл бұрын

I wish you hadnt found his channel because us long term watchers love short form content

@isaiahc8390 2 жыл бұрын

This world is rapidly passing away and I hope that you repent and take time to change before all out disaster occurs! Belief in messiah alone is not enough to grant you salvation - Matthew 7:21-23, John 3:3, John 3:36 (ESV is the best translation for John 3:36) if you believed in Messiah you would be following His commands as best as you could. If you are not a follower of Messiah I would highly recommend becoming one. Call on the name of Jesus and pray for Him to intervene in your life - Revelation 3:20. Contemplate how the Roman Empire fulfilled the role of the beast from the sea in Revelation 13 over the course of 1260+ years. Revelation 17 confirms that the beast is in fact Rome. From this we can conclude that A) Jesus is the Son of God and can predict the future or make it happen, B) The world leaders/nations/governments etc have been conspiring together for the last 3000+ years going back to Babylon and before, C) History as we know it is fake. You don't really need to speculate once you start a relationship with God. Can't get a response from God? Fasting can help increase your perception and prayer can help initiate events. God will ignore you if your prayer does not align with His purpose (James 4:3) or if you are approaching Him when "unclean" (Isaiah 1:15, Isaiah 59:2, Micah 3:4). Stop eating food sacrificed to idols (McDonald's, Wendy's etc) stop glorifying yourself on social media or making other images of yourself (Second Commandment), stop gossiping about other people, stop watching obscene content etc. Have a blessed day!

@neptun2810 2 жыл бұрын

Imagine it's your fist time to do this manouver and the other ship is closing in. Gives "working under pressure" a whole new meaning.

@aaronc5834 Жыл бұрын

I fly airplanes in Houston and have seen this many times. Its an incredible view to see Texas Chicken in real-life.

@petrichor111 2 жыл бұрын

the animations on this channel are just so good! I am amazed every single time! keep up the fantastic work, my man!

@pieman12345678987654 2 жыл бұрын

Id say both of the ships have bragging rights after this, maneuvering a massive ship like these is not easy. Let alone with all these changing outside forces trying to crash the ship. Hat's off to the hardworking crews that make modern life possible.

@conradmcdougall3629 2 жыл бұрын

I do not live anywhere near salt water but I love this channel.

@benjaminmattern2831 2 жыл бұрын

Super cool breakdown of the physics involved... I love learning how and why things happen, the whole world just working everyday is a combination of miracles on a global level!!!

@arthanor9631 2 жыл бұрын

From a game with potential winners and losers, to a dance where everybody is happy! Life is better on the water!

@eamoncole6076 2 жыл бұрын

I know nothing about boats, I'm a physics student and I love listening to passionate discussions of classical mechanics

@havanadaurcy1321 Жыл бұрын

My cousin's husband worked on an oil rig, the amount of near misses at night at this Chilean one by boats without lights on was terrifying. Usually the night work is indoors.

@wolfcraft484 2 жыл бұрын

while i might not sail a ship myself i find all this stuff interesting

@GarfieldRex 2 жыл бұрын

Just awesome info, physics are really the star in the navigation profession. Awesome video 👌

@737Garrus 2 жыл бұрын

LMAO "Everstuck" You made me laugh IRL

@BlankPicketSign 2 жыл бұрын

"You play chicken long enough... you fry" ~Batman

@MidnightSt 2 жыл бұрын

Thank you for making me understand that the people who got the ship stuck in the canal were not incompetent or stupid, there were just more complicated effects in play than I knew of.

@thomasdalton1508 2 жыл бұрын

They are professionals who are supposed to know about those complicated effects and should be prepared for them, though.

@MidnightSt 2 жыл бұрын

@@thomasdalton1508 and I am a professional programmer who is supposed to know (and DOES know) about many complicated effects in software, and should be (and AM) prepared for them, but it is the nature of complicated things (and human beings) that once in a thousand cases, human beings forget to account for some detail that then proceeds to royally bite them in the ass.

@hobog 2 жыл бұрын

5:10 how does bank effect affect four dragonboats racing side-by-side down a narrow channel?

@jaquigreenlees 2 жыл бұрын

speed and draft of the vessel, the smaller shallow draft dragon boats have very little bank effect. They just can't get the speed needed at their draft to generate enough of one.

@JH-lo9ut 2 жыл бұрын

I don't think they displace enough water for the effect to be noticable.

@JuanJDumeP 2 жыл бұрын

Crazy you mention this because I noticed a small wake wave about 8-10 feet in front of the boat as I navigate. Never made sense to me.

@otter2183 2 жыл бұрын

Great video! We experience this in the Newcastle AU when the river is in fresh water conditions. The passing ship can pull a vessel away from the berth.

@jmaniere 2 жыл бұрын

great but do need to get a overview video of actual ship doing it now that we understand it... thanks to you .... any link?

@charliethebeagle4395 2 жыл бұрын

I'm not sure if you covered it but didn't something similar happen to HMS Hawke when it crashed into the Olympic

@Sane-Pai 2 жыл бұрын

What would happen if the ships arent of comparable sizes? Im assuming that the ships' high pressures and low pressures wouldnt be comparable. Would the smaller ship's high pressure be able to counteract the bank effect of the larger ship?

@cmdrtianyilin8107 2 жыл бұрын

This is something really interesting to learn.

@alwaysbearded1 2 жыл бұрын

Cool, learned something new. There is a similar effect when boats are alongside each other. I think this channel has covered this. Thanks. I'll watch to see if this is used in the shipping channel I sail out of.

@ducknorris233 2 жыл бұрын

I used to work very near where the Houston Ship Channel begins. There surfers that ride the waves cause by the channel traffic.

@cats400 2 жыл бұрын

"Tanker Surfing"

@catsaregreat6314 2 жыл бұрын

As a person who lives around the Halifax area I’m very very familiar with ships playing chicken. Not because the Imo and Mont-Blanc played chicken, but because there’s a weird bit of misinformation that I’ve heard floating around that they did

@Saimyoshu 2 жыл бұрын

Why do MASSIVE ships play Chicken? Me: “It’s NOT what you think”

@FrodoBoschman 2 жыл бұрын

Why were the red buoys pointy and the green ones flat at 04:04?

@collectorguy3919 2 жыл бұрын

Now I'm surprised that two ships in a channel, with a low pressure between them, aren't pulled together and broadside each other.

@andoletube 2 жыл бұрын

It's not as easy as all that - in order to broadside each other, they'd have to displace an enormous amount of water. This rarely happens once you have two vessels side by side. There is a cushion effect between them by that point because the water between them is difficult to displace - even with relatively low pressure zones between them. It's different to displacing air between two large trucks - where air can escape vertically. The most likely time they would make contact would be right at the start of the manoeuvre, or right at the end, but not a full side impact.

@isaiahc8390 2 жыл бұрын

@Skywardeyeprophet Жыл бұрын

Learn sometime new every day, thanks for the informative video

@Seiskid 2 жыл бұрын

This I did not know. Thank you for teaching us something quite interesting.

@kokio05_31 2 жыл бұрын

I do this about 30 times a day with an inland ship on the “Mittellandkanaal”.

@jellef4704 2 жыл бұрын

Mmmm... texas chicken

@OceanAce 2 жыл бұрын

🐔

@DavidRach2 2 жыл бұрын

I loved learning about this, thank you!

@VinceCannavaII 2 жыл бұрын

His mother and father were pixelated. I'm glad he's overcome the odds

@jogandsp 2 жыл бұрын

It's really cool to me that even though we're talking about ships and water, we still see Bernoullis principle in action!

@marcuscoquer5958 2 жыл бұрын

This is really nicely explained. Brilliant video.

@SirKenNorth 2 жыл бұрын

This is probably a pretty stupid question but I don't really understand how you have high pressure and low pressure in an incompressible fluid?

@beeble2003 2 жыл бұрын

"I thought I understood two things but I just realised they contradict each other. Can somebody help?" is about the smartest question there is. The main point is that pressure and compression are two separate things. Pressure is a force acting on an area; compression is things moving closer together. Pressure _causes_ compression, but it _isn't_ compression. At the front of the ship, the ship is applying a force to the water, to move it out of the way. That force is exerted over an area, so there is a pressure. The pressure is higher than if the ship wasn't moving: if the ship was stationary, the force would be just enough to stop the water crushing the hull but, since the ship is moving, the force must oppose crushing _and_ move the water. Similarly, there's higher pressure at the back of the ship because the propeller is exerting a force on the water. Lower pressure at the sides comes from two sources. First, the propeller is pushing water backwards, and that water has to come from somewhere. It's partly pulled from the sides and partly from below, so those areas are "under suction", i.e., at lower pressure. The other source is from the Bernoulli effect. Molecules of a liquid are in random motion, and they exert pressure by bumping into things. When a ship is moving relative to the water, the collisions with individual water molecules tend to be glancing blows more than direct hits, so they exert less force. Lower force over the same area means less pressure. The same effect occurs between the bottom of the ship and the bottom of a shallow channel, tending to "suck" the ship downwards more as it moves faster. This is called "squat". I think it's also worth talking about incompressibility. There's actually no such thing. Anything can be compressed if you push it hard enough. Atomic bombs work by using a conventional explosion to compress a lump of plutonium metal so that it becomes small enough to support nuclear chain reactions, but we typically think of metals as being "incompressible", and more so than liquids. We typically think of gases as being a bunch of billiard-ball molecules floating around in space, occasionally bumping into each other. Obviously, they can be compressed by just moving the molecules closer together. We think of liquids as being billiard balls that are already in contact. They can't be compressed because there's no room for them to move. The thing is, molecules aren't billiard balls. In reality, molecules are kept apart by electrostatic forces ("static electricity"). Two molecules repel each other because of the negatively charged electrons orbiting around them. The repulsive force between two molecules grows very quickly as they come closer together, which means that you need a big force to move them a little way, and then an even bigger force to move them a bit closer still. Think of it as a powerful spring: it's not impossible to move, just difficult. If you like, the billiard balls are actually slightly squishy. And, as you push on one of the squishy billiard balls, it pushes on the ones around it and squishes them slightly, and they push on their neighbours, and so on. One final point is that one needs to be careful about applying static reasoning to dynamic situations. In a static situation, with nothing moving, pressure in a liquid depends only on depth, because the billiard balls are squished slightly by supporting the billiard balls above them. But, in a dynamic situation, pressure also depends on what's going on. When you start shoving molecules around, it takes a while for that "information" to travel from molecule to molecule and, until they've all adjusted their positions, there can be pressure differences, even at the same depth. But, by then, the ship has moved some and has pushed some more molecules and the system can't settle into another equilibrium state until the ship has gone. Anyway, sorry for writing a whole essay -- I hope it was useful! I'm not a physicist so there may be some inaccuracies in the above, but I believe the big picture is pretty much correct.

@bonesdg1 2 жыл бұрын

I wish you uploaded more, I’ve binged all these videos, they are relaxing for me

@leonidshapiro3066 2 жыл бұрын

It's unbelievable how much must the ship master and his officers know.

@adriaanboogaard8571 2 жыл бұрын

That's something I have wondered about for a long time. Not from watching ships but from my Kayak 14 foot or my 8 foot long boat in small Rivers during low flow .I only kneed 6 inches of water to float . When I get close to one bank or another. My Kayaks have the same effect. Just like testing scale models. Water craft in water or Aircraft in a Wind Tunnel better to learn small scale than from large accidents. I noticed happens without having any thing coming the other way in almost still water .How much does Gravity effect Hydrolagy ?

@TheRasalhaag Жыл бұрын

do I get this correct, the only rudder movement is at the beginning of this maneuver to initiate the turn. then the rudder is straight and the bank effect pulls the ships straight as well as back into the middle?

@RikuOo 2 жыл бұрын

Hey there, I was wondering why there is no video of sailing speed and techniques. Maybe an idea for a future video ;) ?

@mrsfireleg Жыл бұрын

Very interesting. What effect does the stern’s positive pressure have? Thanks.

@gefginn3699 2 жыл бұрын

Great post my friend.

@spavliskojr 2 жыл бұрын

i learned something new today! never knew this happens with ships. cool stuff!

@isaiahc8390 2 жыл бұрын

@battfieldsniper1 Жыл бұрын

im from houston texas,, they are currently dredging the whole ship channel.. so this isnt a problem.. june 7 2023. i drove over the bridge ... theres currently 31 crews working on it...... (damn traffic)

@ralphcalzada4767 2 жыл бұрын

this is dangerously fun

@everything_delete8005 2 жыл бұрын

We do the same thing on oilfield roads that are generally 1.5 trucks wide you drive straight towards the other guy and then pull off within a reasonable distance and then go back to the middle of the road. If you’re bigger then you stay centre or smaller you pull off. Size matters 🤣

@Syd_plane_and_train_spotter777 5 ай бұрын

1:52 LOL 🤣"Everestuck" not "Evergiven"

@SilverCinder1 2 жыл бұрын

I live on clear lake right on Galveston bay I see that happen all the time sailing, or even from shore. It's most on the icw

@markhonea2461 2 жыл бұрын

Do the ships have a sudden burst of speed as their stern's both line up?

@beeble2003 2 жыл бұрын

I would expect so, yes. Similar to ground effect in a plane, the propellers would become more effective because the wash from them is constrained by the other vessel. Given the weight of ships, though, I wouldn't expect it would be a huge effect.

@mumblbeebee6546 2 жыл бұрын

Wonderful! Thanks for the good explanation and the everstuck!

@Auldpharte 2 жыл бұрын

HMS Nelson, a Nelson class battleship ran aground on the Hamilton Shoal in January 1934. This is amusing to those who know of Admiral Lord Nelson’s relationship with his paramour Lady Hamilton. In the enquiry it was decided that the accident was a result of the ship’s poor manoeuverability at low speed. Bank effect may have been involved.