The AC75 | Designed to Fly

Take a closer look at the technology and design rules that allow the AC75 to fly.
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The 36th America's Cup presented by Prada will be contested by the winner of the 2017 America's Cup, the Royal New Zealand Yacht Squadron represented by their team, Emirates Team New Zealand, and the winner of the Prada Cup, the challenger selection series which takes place in January-February in 2021.
#AC75 #BoatDesign #AmericasCup #AC36 #Auckland2021

[@paulj8726]

I was at the America’s Cup in SF USA in 2013, those AC’s were fast, like dragster on water. But this new design...OMG.

[@bobhebson9331]

Been watching these testing from my living room window, here in NZ

[@pic18f452]

Well, how about an invitation then?

[@olliefoxx7165]

That's cool. Enjoy the privilege of seeing those thoroughbreds race. Wish I could see them.

[@nicholasstathos1387]

Well, you are about to have a guest

[@108hindu]

Well rub our noses in it.... : )lucky dog....

[@ghimdohghyun]

You are so many happy. I got it from youtube only. Enjoying your vision!

[@joshuarosen6242]

I haven't followed the America's Cup for at least 20 years and I had no idea what had been going on. These things are absolutely incredible and I'm sure that a huge amount of innovation will be possible over the next 20 years. I had never thought of a boat being a plane that hasn't quite taken off but the AC75 looks like exactly that.

[@gcm747]

It’s going to be one hell of a series. Four teams, four designs - one winner!

[@letrasynumeros6353]

Wait until someone gets the crazy idea to cross the atlantic with one of these and break some records. Its going to be amazing

[@strongme80]

Sir Richard Branson, you in here?!

[@gotmer4567]

kzbin.info/www/bejne/hH3HpoRnjahobNE they already try to go around the world

[@Nobilangelo]

These speed-machines give 'winging it' a whole new meaning.

[@AlexVargasPipa]

The sound it makes (last take), impressive!

[@juanpordioss]

The same sound as a Formula E car (not F1).

[@bobbobbly7900]

these boats are bloody amazing..it's great to see the future in your own time

[@nickscheppmann7373]

stoked on those 3D animations

[@maxaksenov7580]

fantastic! bravo engineering team such a nice work is done!

[@RealStuntPanda]

I love that America's Cup is allowing innovation to make the best racing sailboats.

[@stevenwright6573]

I have 0 sailing experience or knowledge, but I love that the Americas Cup is doing this. New boats, new technology, room to grow and modify the design. Sailing faster and transforming the sport by pushing the edge of performance. This is what racing is about and the people in charge just made sure 1 more guy will be paying attention come race time. Go team USA!! Watch out for those Aussies and Kiwis! They seem to get on pretty well in the water last time I checked lol. Give em hell and win it all.

[@hwwelds9050]

So incredible. Love it

[@robinhodgkinson]

The sound of that “sail over” at the end always blows me away. These boats are highly strung machines. I’ve been out on the Hauraki a couple of times as the kiwi boat has rocketed past me - they are an impressive sight up close. The AC has always been about cutting edge sailing technology and the fastest boat, as much as it is the best sailing. Why did the US keep the cup for so long? Because they consistently built boats with an edge over the Brits. I bet the designers of old would wet their pants at the thought of sailing one of these babies.... Or maybe just wet their pants sailing one of these babies! 😁 21st century sailing - bring it on!

[@olliefoxx7165]

I was just marveling at the tech, innovative design and the highly trained crews. We are seeing them with modern eyes. I can only imagine what they would look like to the old racers. The most intriguing thing is how their innovations will make it to mainstream boating.

[@MultiAlxndr]

If we are honest there was a bit of abuse of the Deed that allowed the cup to stay in the same country

[@olliefoxx7165]

@@MultiAlxndr Come now. Adding Salt doesn't change the outcome.

[@deeremeyer1749]

Actually its all about seamanship and human skill. At least for the country which has dominated the competition throughout its history. The U.S. never built shit as a "nation" and all its winning yachts - including the MANY REPEAT WINNERS THAT WON WITH "OBSOLETE" TECHNOLOGY were/are all privately owned and not "subsidized" by any government at all. If you obsess on "winning" and "national pride" and "technology" instead of improving, personal achievement, independence and skill and a team effort, you get your ass handed to you by "colonists".

[@deeremeyer1749]

@@MultiAlxndr It has nothing to do with "countries" at least in the U.S. and it stays in "America" because "America" won it first and then "donated" it as a prize for succeeding races. Shall we talk about "Royal Yacht Squadrons" and government subsidization of "racing yachts" vs. actual private ownership and legitimate competition?

[@scottmacdonald2302]

I can not wait for opposing teams to be going at it in 2021 in NZ it will be amazing. Cast your minds back to Australia 2 & the winged keel 🤔who ever thought it would end up here back then🤯

[@JimSting]

Yes. I think this new design owes a fair bit to Ben Lexcen.

[@therealzilch]

Amazing design ingenuity. Kudos.

[@S_Bellew]

They actually got the airfoil wing theory completely wrong in this video: kzbin.info/www/bejne/m5Wvn42de56gi8k

[@davidextance1431]

This is just the best video for us tech heads who want to know how something works - i find it exhilarating watching these machines operate. If only for a ride.

[@ZeacorZeppelin]

Beautiful and science all in once

[@lorenzopiano7419]

So much powerful...!! 👍👑

[@nunezrodriguez]

An amazing thing...👍🏿👏🏿‼️

[@juancanobra5854]

URUGUAY 2026 America'SCUP

[@dreadnoughtjeffries7613]

Magnificent machinery

[@UnkleSi]

Love the details, great video

[@juanpordioss]

Great video . Thanks for share

[@slothandturtle8036]

This design is just mindblowing 🤯

[@alexandergallard3624]

Insane

[@miken966]

I sure hope the formula still allows for the battles in strategy that we, all , love so much.

[@nem447]

yes

[@DoubleMonoLR]

Not so far unfortunately.

[@georgenameer6593]

Damn Benny did his thing with that keel

[@Auckland_Smart_Technology]

Excellent design, it is revolutionary for boats, not only sailing but flying on hydrofoils

[@parcos79]

WOW MINDBLOWN

[@1066PV]

Excellent explanation

[@marknasia5293]

Flying Outriggers awesome

[@jimmytai1915]

Amazing 🤩

[@chuckcts-v3460]

Hearing the natural noise of the boats would be much better than the annoying music.

[@lucapeisser5292]

I‘ll be waiting for the aquaholic walkthrough

[@Andy_M986]

That would be Nics shortest tour.

[@gregorygalla8503]

Mindnumbing

[@josevelez7539]

Super cool!

[@rodmuellerphotograph]

Damn impressive.

[@alainremi267]

As an old Frenchman, I can't resist thinking how Tabarly would have reacted to that technology ??? I'm sure he would have been completely crazy-happy about these flying monohull sailboats 😀😀😀

[@pocketchange1951]

👍👌🇨🇦❤, nicely done

[@murphyspattaya]

mind blowning 👍🍀👍🍀🍀

[@katzda]

Dolphins must be excited to see such a thing :-)

[@OneManWP]

prada boat sexiest thing ive every seen

[@beggartown]

just enjoy

[@TheNikotin33]

So if its battery powered then wtf are the 8 cam turning dudes for???

[@riffrff]

the battery is for the foils, the dudes are for the sail

[@TheNikotin33]

@@riffrff but why not use a battery for the sail

[@riffrff]

@@TheNikotin33 I don't know for sure. I think they would like to keep as much "human" in the mix as possible, bit it is just impossible for the foils because they're too heavy.

[@chrisntheboat]

Fire the audio guy......Geeze ... On another note: Friggin awesome

[@Zumaray]

Can’t hear to what being said to music blowing my speakers!!

[@myzticman]

Yeah this sound is horrible. What a way to let down a very professional video.

[@davidho2977]

Do you need to have smooth water and steady wind with these? It looks to me like they might be unstable when they're up on the foils.

[@Abandoned_Brane]

ill be honest, i miss the tactical sailing. the iacc years were exciting.

[@jeltehoekstra2952]

Then again, these are some really cool ships

[@stephenm103]

Like all other technologies we are increasingly shifting expertise and proficiency away from the operator to some design engineer . . . . . Dont get me wrong - - there's still a great deal going on that these crews need to master to be competitive BUT if we could accurately map the percentage of contribution to "the win" which resulted from human knowledge of the sailors as compared to the technology of design of their boats - and plotted that mix over the last 50 years - - - - we'd see a gradual decline in the contribution of the sailors and an increase in the contribution of the designer. It's "progress" - according to someone. I for one, prefer any competition which subordinates the technologies to human proficiency. It's far more interesting and full of human intrigue. Rhetorically - how long before an F1 "driver" gets into the cockpit and at the green, simply pushes the "GO" button?

[@mikebookhardt4571]

Honestly it’s nice, and fun, to have a rivalry. As long as it’s in good sportsmanship. Forgive me if, as a US Citizen, I root for the US. However I do want the best team to win, and right now, the US team has a few deficient members.

[@NotifyTheDog]

As a New Zealander, I'm rooting for us. But you're good dude. Best teams wins. If you happen to be in Auckland when this happens, I'd be happy to take you for a drink or two.

[@mikebookhardt4571]

Andrew Gratton fair enough! May the best team win. Right now, it appears to me that NZ has the best team. I don’t have a lot of confidence in Spithill. Either way, cheers to good and safe races!

[@mikebookhardt4571]

Andrew Gratton also meant to say if I can get there, I would be honored to raise a glass with a fellow sailing enthusiast.

[@chrisnurnberg9599]

I wish they get back the 12-meter boats or the AC boats that when up to the year serious 2007. To me, this isn't saying anymore it's flying on the water!

[@chrisnurnberg9599]

@OldPlaces They're impressive boats with engineering and Technology. I just feel as you watch the sport of sailing, that tactics, crewmanship, sail sites and of course what takes place during a start of race have all gone out the window with these boats. Watching the previous era of monohull boats you could look at things that might improve your sailing on your boat. I just don't agree with your opinion that this is pure sailing because the style of boats there is many things but you don't have to worry about with going upwind or downwind. I guess we'll just have to agree to disagree.

[@chrisnurnberg9599]

@OldPlaces and I agree with you on that I just wish we could get back to that style without the foils and the things that make it look like catamarans or trimarans. Once Upon a Time it used to be about the water line issues on a boat and I just feel that this new era of sailing has gotten totally away from that. I also get that it's because of the rules of the American Cup where the defender gets to choose what they want to race in. I feel that we got into this style because some of the Defenders were scared that the Challengers were becoming progressed with their technology of a monohull.

[@colaoliver1587]

My father was a test engineer working with hydrofoil designer William Carl in the 1950's & early 1960's. We had a Sea Wings Hydofoil runabout. What I do not understand is the balance of the AC's. Why do they run Bow Down?? If you watch them run and watch videos of them crashing, they dig their bows in. The foiling catamarans do the same thing but they would pitch pole further endangering the crews. It seems as if the rear foil is keeping the stern down not holding it up. And I agree that the designers of old would wet their pants knowing the boat could crash at any moment and then need a host of support craft to right them after they crash.

[@samuelzackrisson8865]

I believe it has to do with the stabilizer is fixed which means it has to fly pitching forward to be able to work up wind too, but I can be wrong

[@ChimeraActual]

Only one reason: it's faster. Don't ask me why, although if the aft foil were keeping the stern down the bow would go up I think.

[@fredh999harris8]

@@samuelzackrisson8865 You are right. Pitching forward makes the top of the mast lean forward & the center of gravity move back. This gives the boat greater ability to eat out to windward better (pointing higher). Thus, the boat that points higher will win.

[@dietterflieller5003]

Verry good idea for my last boat

[@brogabrerian]

When a boat is no longer a boat but a boplane

[@bigbob1699]

Did I hear some one say , " Ramming Speed !!!"?

[@archolino]

✨WOW✨

[@juancanobra5854]

GreatDesign!Congrats!TEAM Designer'S /Pilots!/Cockpit!and Sponsors!!! simply Brilliant! AMAZING TECH Hídric|Fluid|WingSustainable|✓}

[@Jevandtieriel]

It is my understanding that the cross-sectional shape of a plane wing adds about 10% to the lift - its the angle of the wing that does most of the work.

[@daemn42]

Can't speak to the 10% figure, but you're correct that it's a positive angle of attack that induces the lift generation process which will happen the same way when you push any relatively thin object through a fluid. To understand the true mechanism of lift generation search for "Stagnation points", "Kutta Condition" and the idea of a "Bound Vortex" . Basically any time you increase the angle of attack of a thin object (particularly if it has a sharp trailing edge), the forward stagnation point drops lower on the leading edge (or even below it) while the rear stagnation point stays pinned to the sharp trailing edge (Kutta condition explains why). This means fluid that is forced to split and pass above the forward stagnation point has to follow a longer path to reach the rear rear stagnation point so it travels faster. It's not a matter of equal transit time (that is a myth), but equalizing pressure above and below each stagnation point (which by definition are points where the pressure above and below are the same, and the local flow velocity is zero). The fluid above the foil actually travels *faster* than the free stream fluid and reaches the trailing edge before the fluid that went below the foil. The net effect is that the faster moving fluid above the foil is deflected downward behind the trailing edge and the net downward deflection integrated over time equals the total lift generation of the foil. The significantly faster moving fluid above, and slightly slower fluid below can be visualized as a rotating vortex that moves forward at the same speed as the foil, also known as a "bound vortex". The shape of this vortex varies with desired speed and loading. Any time the bound vortex separates from the foils surface, it creates localized vortices (stalling) and this adds drag. The goal of foil design is to make its shape follow the bound vortex flow lines over the desired operating speed/loading to avoid separation and added drag. In the end the bound vortex determines the shape of the foil, not the other way around.

[@jakegedrimas7569]

@@daemn42 It always makes me cringe when I hear the Bernoulli equation explanation for flight. Its 90% mass transfer. If you force something down the reaction force is upwards. I get it these are hardcore sailing guys and now Aerospace people but you know there are hundreds of fluid sim guys supporting these teams who a facepalming. The pressure diagrams they showed in the video shows the exact opposite effect. There are many ways to estimate lift but pretty much none of them assume equal travel time over both sides. The long story is we dont have a complete understanding of everything that makes a plane fly but we have ALOT of very good estimation techniques that are backed by test data with alot of BUTs attached to them. The big buts here are in-compressible (water), no slip condition (higher viscosity), pressure drop will result in cavitation so you have a floor of the low pressure area (you need thin foils or low camber or low angles of attack), extremely limited angle of attack (sharp foils). I haven't taken a stab at this design problem but this points towards a very high aspect ratio with very low wing loading, think glider except this has flaps to account for the very limited angle of attack range you get with such a long distance between the rudder and the foils. What I'm curious about is the drag on the rudder from the very high asymmetric drag. Unless the boat is designed to fly sideways a bit.

[@specialmilks8592]

Amazing. That's all I can say

[@LimitedWard]

Wind: **woosh** AC75: **HONKS** with joy

[@user-fe2yz1vc4g]

Шикарно!

[@andreynone6751]

Посмотрите kzbin.info/www/bejne/fqLTdWOEir5pq9k последние 20секунд. Там яхта со свернутыми парусами идет почти с такой же скоростью. Что её приводит в движение? Ни фига не понял! Ведь сзади у них тоже крыло, а никаких винтов нет.

[@mikelliteras397]

Didn’t think they could do less of a yacht than the cats, but i was wrong. Now theres even less or no part if the boat even touching the water. Its just a cool race now, not a yacht race. Probably wont be any rubbing is racing moments that used to be so cool but now could take this out of the race and could hurt someone really bad if they get hit with that foil while its up in the air. That was some of the best parts of the races. Speed should be awesome tho. Battery and hydraulics also, not just man power, oh well.

[@Roxxieisrealaf]

Good game.

[@freddy7700]

👍 👍 👍

[@kashphlinktu]

Those guys look so busy, what are they doing turning that crank? It looks like they’re spinning that thing all the time whether the boat is turning or not

[@johnmcmillen4540]

A newbie question: How resilient are these AC75s in choppy conditions? Are they only built for flat water match racing near shore and nothing else ?

[@shayleyshootingstarlet]

It would be an exciting ride for tourists also! I am just wondering, how is it assured the hydrofoils won't ever drop on marine life?

[@adrianstanciu8876]

Me too

[@konstantin7596]

It’s not

[@stevenbennett3805]

Uber cool.

[@mountainslopes]

Tenet opened this whole world for me 🤯

[@Thefreakyfreek]

May be a dumb question I do sail myself on a small steel sailboat but why are thay pedeling al the time

[@azatecas]

they power the hydrolic system that allows them to quickly turn the heavy sails under wind pressure with ease.

[@jeremysmith9696]

The rules state that to move a sail or foil it has to be done via cable, hyrdrolic or battery. As these new boat systems are too heavy and complex to move by wire, they have chosen heroic powered by battery. the issue is that the only way to charge the battery by the rules, is by human power. Thus, they're always turning and turning the generators to keep the batteries topped up. It's nuts!

[@terrysullivan1992]

@@jeremysmith9696 I agree. It is nuts. Might as well just let the boats have Li battery packs charged onshore. Really only need a crew of two or three

[@Alan_Hans__]

Is the cup only being run on dead smooth water? I would imagine that a swell of a few metres would play absolute havoc with these.

[@CapriceV6]

The fastest sailing boats around the world are Foilers. They actually are smother over rough water more so than traditional boats having to bob up and down over the waves.

[@neilcowan535]

@@CapriceV6 As long as their foil 'legs'are long enough! Hit a decent wave at whatever ridiculous speed these things are flying at, and all bets are off! :D

[@paolobramucci3609]

Compared to IMOCA and Ocean Race boats, the AC boats are near shore day sailing boats that are not designed to sail in extreme conditions. It is one of the reasons why they do not need a keel. They more than likely can handle a bit of chop. Though, unless the rules have changed, they would most likely not be out in full blown gale force winds, which the IMOCA and OR boats are. If you look up these boats, you will see that besides the keel, which is a canting one, they have gone with a flat bottom hull. Their foils are upwards curving moustaches that in addition to lifting the boat, act as brace that counters their heeling of the boat. While the foils do lift boats, rarely have them running flat over the water, as the ACs do. Their bows are dreadnought like, leaning into the boat and whose deck sides slope downwards to help dissipate the energy and weight of the waves breaking over their bows minimizing the effect of their downward force. kzbin.info/www/bejne/p3O0lHeQeMSlaMU

[@fffuuuu2]

The max allowed wind is 15 or 17 knots I believe so you're not going to get much swell, and that's in a harbour

[@johnvanvoorhis2580]

And that has actually been true of most of the America's Cup classes since America herself. The J boats and the 12 meters wouldn't go out if there was a small craft advisory.

[@mheermance]

This is one of the most amazing things I've seen. But I would had to be on that boat if it capsized or pitch-poled.

[@joshuarosen6242]

Whereas on other racing yachts that would be fine?

[@mheermance]

@@joshuarosen6242 It's much more likely to happen at those speeds.

[@ilyadorokhov7827]

Sound levels in the video are all over the place

[@how2scuba]

yes

[@how2scuba]

It's a shame they didn't catch the audio problems earlier....

[@MCPYachtsofficial]

This type of foil system for monohull sailboats has an international and New Zealand patent that belongs to a naval engineer called Manoel Chaves. The system is called SBS. The true history of this system will be revilled in the next months.

[@jazldazl9193]

America’s Cup defender Emirates Team New Zealand comments on the situation: “In July 2020, we responded to the allegations made by Mr Chaves. The design of the AC75 foil cant system has not been copied or inspired by Mr Chaves’ design in any way, nor does it infringe any patent. As we have explained to Mr Chaves, his patent requires features not found in the AC75 yacht. We simply reject the allegations and have explained why those allegations are wrong. Emirates Team NZ will strongly resist any infringement allegations Mr Chaves may choose to bring. Every good idea has 1000 fathers.”

[@1kleineMax1]

The AC75 is a flying sailboat, that is totaly different from hte SBS which only helps in stability. If you would try to fly with it... it would break of. Cause it hinge is also the motor that lifts it out and in the water. The AC75 has only a hinge at the hull connection and a lever inside where the pistons atache

[@TheEnzedone]

This aged well

[@MrRobertFarr]

Pretty interesting. The technology of #Hydrofoiling was #Popularised by #TheBillabongOdessey Movie in the 2000s which featured #LairdHamilton #HydrofoilSurfing.

[@andrewvare3173]

Have to stay assertive with your tacks. I'm going to bet the trickiest point of sail, relative to capsizing, is in irons.

[@jazldazl9193]

capsizing: the trickiest point of sail

[@behonestwithyourself3718]

How do these boats sail downwind? The boom seem to never go out. Im new to sailing. I'd like to see the technology behind the points of sail. These things are crazy.

[@johnneedy3164]

Now wonder if can apply this to a remote boat 🤔

[@olliefoxx7165]

Try it! Make sure you document and post!

[@TheHardstyleFox]

What shoes do they use? They seem very slip resistant.

[@georgejohnson1649]

they need to look at the airfoils for R/C dynamic soaring gliders they are breaking 500mph with just the wind

[@00708046]

Exactly ! Follow the leading edge of technology not the carrot !

[@stephenm103]

The airfoils are not the key to dynamic soaring (although - their design IS influenced by the flying speeds the designer expects) - - - the key to dynamic soaring is the use of energy present in a "shear" or air masses of different speed or direction. While significant ground or airspeeds are possible using this technique, the ability to navigate a specific course while also sustaining those speeds would be a challenge.

[@mckenziekeith7434]

You think they hired a bunch of second-rate foil designers for the America's cup? LOL.

[@corvxnite]

How is this boat propelled? It sounds motor driven in the end

[@benodaboy]

Any other f1 fans here from that Mercedes/ineos collaboration?

[@gerhardkutt1748]

Everything is cool until they get to the fundamentals of how the foil works. That is a really old theory that holds NO WATER, because hydrofoils do NOT work with pressure variance to create lift. Water is incompressible. Air plane foils don't work like that either, because the diagram is wrong. The water and air is still, it is the foil that flows through the water, parting it. It is the action of parting and the force of the foil on the field of water that it influences. So the water infront, the parting of water molecules, the speed at which the elements is made to move out of the way above and blow and the resulting water pattern after the foil leaves the vicinity. The foils sweep through the water like a squeegy. The foil's angle of attack and profile pushes the water down as it travels through the water, and it is that, that creates lift. The trick is to create maximum lift with minimal disruption to the water around it, so the more laminar flow the foil can create through the water the more efficient the foil. Lift varies with speed, chord length, profile shape, leading and trailing edge design, span, chord, foil thickness, and where the foil sits in relation to the surface because remember it is as much what happens to the water above as below and how close to the surface the foil can get. Finally you have tip vorticies, which need to be reduced to reduce drag. The New Zealanders understood the foil better than ANYONE else by far. They had the smallest foils, with the lowest drag, with most effective lift and least tip vorticies because they knew to keep the foil flat, and as close to the surface with the top protruding the surface to eliminate the tip vorticies at least on one side of the foil. Their strut was also very small, thin and narrow with the strength taken up in the bend and strut structure above the water line, all to reduce drag. This is why they were 2 to 5 knots faster than the Italians who had bigger foils that ran deep in water, hence greater drag. All the teams were playing around with foils because they really had no idea how they really worked, except the NZ team. They got it right pretty early on. They also modified their hull to have the most effecitve aerodynamic profile and lowest front area, so the boat itself worked as a lifting device with the people positioned in such a way to stay out of wind resistance at higher speeds.

[@keithcooper3159]

What are they turning?

[@VidarrKerr]

Whoever did the audio for this video is a J.A.

[@hobog]

4:56 wind should be more into concave side, as desired for more sailing power

[@rhubarb6565]

I still havent seen any explanaition of how roll stability is achieved (ailerons?)

[@davidho2977]

I was wondering the same thing.

[@pangrac1]

Interesting.

[@millertas]

It is now obvious why Airplanes (Well Emirates and Airbus at least) are sponsors.

[@jonathanoasis]

For 1/1000th the cost of just One of these boats, the team could build and donate an entire legion of sailing dinghies plus sailing classes to every marina in the nation.

[@drewrau1059]

Science is cool

[@ktnelson7400]

On a scale of 1 to 11, theses video makers have really dialled the excitement level up to 3. Then not bothered listening to their edit. Top animations though...

[@jeremywilson9220]

I want to be on that boat

[@kees1039]

Cool - however the fact that most of the crew is grinding and grinding all the time reminds one of an ancient slaveship. Why not allow a battery pack with a limited capacity, adding another challenge: balancing energy and manoeuvres.

[@josephinebennington7247]

The Grinders are creating hydraulic pressure that moves the sails and foils, with and by human effort. A condition in the rules. A battery pack removes the required human effort.

[@josephinebennington7247]

Angelous Bacon. Any idea Why the dispensation for the foils? They equally could be hydraulically/humanly operated.

[@josephinebennington7247]

Aaah... then a grand principle of pure human endeavour appears abandoned.

[@josephinebennington7247]

Angelous Bacon 👍

[@jakegedrimas7569]

@@josephinebennington7247 Apparently the foils are weighted for heeling force. The amount of energy required would set a pretty long timer on tacks, which aside from being kinda dangerous would be a bit boring. I dont know what the numbers are but those hydraulics are going to be working very hard. There is alot of vertical displacement there.

[@LeonardThomasHall]

Coolest fart sound in the world!

[@robertfairburn9979]

It is in my understanding in the last Americas cup that team NZ had an advantage in their design of the foil in the water. So their starting with a slight advantage in this area. Doesn’t mean that their design will be best. Also in the last americas cup their was a lot of cooperative work between the Italians and NZers within the scope of the rules. It’s interesting that their boats are similar to each other. I’m not suggesting collusion but rather there starting from a similar technology base. Time will time who is correct. I’ve heard a rumor that the brits aren’t happy with their boat, either it’s the truth or the brits are trying to fool us into thinking it’s a dog. That’s an old TNZ trick from the past.

[@snakers83]

Airbus and Boeing joined the conversation

[@knutpohl339]

Amazing machines, amazing developments and great to see so much technical versatility. I hope the boats look different but perform on eye level overall. Otherwise this will be as boring as Larry Looser's America's Cup 33 Technological advances and spectacular boats are amazing, but only if they make for enthralling, captivatingly close match racing where the crew, their wits and skills make at least as much of a difference as the boat they're sailing. I fear the different design philosophies will result in one boat being superior, but I guess even then the upcoming America's Cup has good potential to be better than the shitshows that AC33-35 have been. But please surprise me and let the action be as good as AC32

[@xFD2x]

I guess you don't like multihulls much.

[@knutpohl339]

@@xFD2x that's really not the driving factor. I dislike any boat class where the costs of manoeuvres are too high to allow good tactical matchracing. If you can't tack to cover an opponent, because you'll loose too much ground, then it's just about boatspeed and plotting the best course. There's plenty of race formats for that. I"d prefer the America's cup to be the pinnacle of match racing. But that's just my opinion Multihulls are truly impressive machines, no matter whether they are smashing records in the Vendée Globe or whether they are offering great fleet racing at the Olympics. And the AC 72's were also awesome developments. But the America's cups where they were used in were just all about straight line speed and didn't offer interesting match racing.

[@xFD2x]

@@knutpohl339 AC#35 (Bermuda) offered quite some match racing. And the boats were agile enough to make it interesting. But hey, that's my (who loves multihulls) opinion.

[@naufalkusumah2192]

so what is it with the crew paddling on the ship?

[@JohnPebis]

They're not paddling they're operating winches that generate hydraulic pressure

[@e2rqey]

These are basically F1 cars in boat form

[@TheLarkite]

Are these faster than the previous version?

[@andrewfogarty9736]

@Angelous Bacon Yes I would agree to that in principle, but we won't really know for sure until the America's Cup Regatta in Dec 2020 gets underway and the TV graphics show the real figures, they could actually be faster in the right conditions.

[@Ryan-nv6vf]

wider wind range. Would never get a race away in the ac50s in auckland, it's too rough

[@neilcowan535]

I don't think its a bold prediction to make, but we are going to see one of these broken into several pieces very soon. Its part of the show in F1 so why not AC?

[@CapriceV6]

There is no Australian team so I think its safe! lol. I think, if my memory serves, they were the last boat to break apart and sink! GO Australia

[@neilcowan535]

@@CapriceV6 Ow, scritch! I think there will be wholesale destruction, regardless of nationality. ... I hope you are around to give me the opportunity to say 'Í told you so!'

[@CapriceV6]

@@neilcowan535 I will be watching! and hoping for some action lol

[@neilcowan535]

@Angelous Bacon A very important point!