Team New Zealand's Brand New Trick! The One Legged J-K!

Race seven of the America's Cup Match and did Emirate Team New Zealand just break out a previously unseen manoeuvre mid race to secure a split and overtake from Luna Rossa?
We take a deep dive in to exactly what is special about this turn and how they achieve such a high turn rate with only one board down.
#MozzySails supported by Allen Brothers: www.allenbrothers.co.uk/
#AmericasCup #AC36

[@MozzySails]

So... what are we going to call this new manoeuvre? Pirate Pete? One legged J-K? I need your suggestions!

[@nh-ss5pw]

Petes pirouette

[@asterixdogmatix1073]

Most people in New Zealand assume the acronym 'JK' refers to a former rugby player and author (John Kirwan). So definitely needs a new name.

[@danielmarek7093]

Kiwi pirouette ?

[@federicocordioli7254]

K-JK (kiwi's JK)

[@nh-ss5pw]

Petes Pole dance

[@Mark_Kiwi]

You are doing an awesome job Mozzy. Really has made a difference to how i understand the racing. Big cheers mate

[@AndyUK-Corrival]

Pretty special move at such a critical time. What else do they have up their sleeve I wonder. Great coverage Mozzy.

[@gold6603]

Double episode today, sweet!

[@cstroganov]

And we could see today how fast the Italians learn. Executed exactly the same maneuver today. Hope they stick with this class. There is still so much to be learned about these boats.

[@federicocordioli7254]

Really good maneuver from NZ, i must say I'm impressed 👏🏼

[@floodo1]

Hell yeah use that data and footage, show us more

[@joeypierantonis7576]

So its sorta, like weight loading a race car, where right before you put on the brakes, you roll a lil outside, wait for the inertia outside, then, pull hard to opposite, squeeze the brakes, wait for the weight to even, & accelerate through? So you can tell that your becoming a huge YT star, asking for subs, likes & bells! Getting to your head ey? Listen mate, who cares. You are not a sellout. You didn't start out asking for views. Don't let that discourage from acquiring you dues. You were just a humble channel, having a discussion about the thing you love. It is that what gives you your popularity. Passionate, factual, expert content. Well deserved my friend, & I'm excited & ecstatic for your success. Your damned right, it doesn't make a bit of difference. Genuine does. Keep it up brother. You da man.

[@johnhart29]

Hey your efforts make a huge difference, adds so much. Great to all when such core data is being shared including to us. A team only gets any advantage once! Fantastic, hopefully the AC75 stays as the Americas Cup boat for a decade or 10. Let's see maximum evolution, what we've seen so far in these boats is outrageous and exciting.

[@SuperReasonable]

Wow, I was impressed with the lifting and ‘leaning’ on the leeward foil for the rolltack, but to do it for a JK is really ballsy. It’s all so dependant on getting that boat hull rolling absolutely right to get maximum force or ‘grip’ as you call it onto the foil. Hats off to team NZ!

[@ikerstges]

I think their flat foil shape plays a major role to pull this off opposed to the V-shaped foils on Luna Rossa.. awesome analysis! 😎

[@randomroberts5351]

Hi Mozzy. Thanks for this further analysis of the rolling tack technique. ETNZ are really showing the rest of us how to get into the detail and what is required to win. Roll tacking at 40knots in complete confidence of your hardware. Looking to be in complete unison with your boat. Tis truly beautiful racing. The devil is definitely not wearing Prada in Auckland!

[@DD-xg4fe]

Spectacular commentary Mozzy! You are the real winner of this America’s Cup

[@seankearney6915]

Good spot and good explanation. I noticed the extra heel and actually thought it was a mistake an that they were potentially going over. I hadn't noticed the foils. Only ever played in small dinghies so I love your technical explanations. Understanding makes watching more interesting. Thanks.

[@AngusMcIntyre]

These boats are miles apart from any other sailing vessel so its pretty tricky for us all to get an idea. The 2 canting foils are another dimension entirely. As a windfoiler, I can have a guess at where the balance points are, and how they might compensate for it, but ultimately we will probably never know just how technical these boats are.

[@damientelle]

Mozz, Great work to collect and show the data ! i think you agree with my comment about the previous video and heel angle. the 10deg heeling is also reducing the lateral wind force vector (by cos (heel deg) ~ 2% if heel=10 deg ) which during the first phase of the JK is added the lateral G-force. This is typical maneuver with ice boat/sandland yacht: OK nothing to do with AC75 but same input : speed > 30 nds, high lateral G-force, limited counter lateral force induced by the skate. Thus if possible we launch a JK by heeling up, moving the wind force vector downward, which reduce the lateral force and thus the drag induced by the skate during first turning phase

[@hansmayerplaza8190]

Hi Mozzy Sails! It's getting more exciting towards the end now. We even saw some real match racing, didn't we. But until now, if you guys hadn't provided this incredible analysis and background information, I think I would have hung up and stopped following the America's Cup. Huge thanks for the great work and the professional presentation. I hope this is your ticket to the ETMZ strategy team for the next AC... ;-) Highly merited!

[@Justin-bw8zi]

Great commentary, discussion, and insight. To your point, unfortunately while a bit of bad luck, Luna Rosa lost race 8 on a mistake. In the light air, they accidentally ventilated the foil (you can hear Jimmy saying “a lot of cavitation boys...”). The foils at all speeds on that boat do not create cavitation (the design and engineering ensure this does not occur), but putting the flaps all the way up to try and create lift does - thus they came in with the flaps fully up on the foil causing the cavitation and losing lift such that the new foil had no chance as they had already stalled. Dean Barker (of all folks) pointed this out during one of the commentaries before Race 9. Really interesting

[@dadcooks1347]

They tried to do the same manoeuvre against the USA during the World Series, they had a huge skid out and fell off the foils, so they have learnt the cant/heel trick since then to refine the turn

[@MozzySails]

Yes, see my previous video on the tacking. They weren't micro adjusting the cant system back in the ACWS. This is almost certainly something they became aware of after watching the other teams (and INEOS complaining about the FCS issues).

[@damientelle]

haven’t notice this new way of JK ! but as said in previous comment, this is why the T-shape has a advantage, as long as you manage to control properly your kant. Guillaume Verdier (french architect, member of ETNZ architect team since 2009) was nearly given the explanation during a french interview. But he did stop before the full answer ..... In top i think ETNZ arm profil is much more asymetric at his underwater part, keeping both board down with a high turning rate can probably induce a bad angle of attack for the inboard foil. I think the one leg JK is something foreseen by the design team, but until now the sailing crew wasn’t taking the risk.

[@danielrepko347]

Thoroughly enjoy your clever and insightful analysis. Funny to see that several sailing commentators use your 'discoveries' without crediting you......good on you!

[@gianlucajandelli6387]

Without diminishing Mozzy Sails' insights (which I appreciate), even Italian commentators had a similar analysis.

[@CP-nd3pj]

Yep nz media are doing it too!

[@Inbredcity]

Yes, the commentator on TV One, the main broadcaster here in NZ did exactly that, the next day when Mozzy did the roll tacking video.The commentator is a clown as he called our race was done when we came off the foils.As soon as I heard him talk about roll tacking I knew he had been watching the video by Mozzy.

[@aswnow]

Fantastic videos mate! Thank you for explaining things so clearly and precise. Keep up the great work. Cheers from a small town in NZ.

[@KarlFullerNZ]

And The Americas Cup is NZ Cup, again! What a demonstration today!

[@simonpuxley7374]

Magic update thank you. And it does make a big difference to us I think. It’s absolutely fascinating how they’re operating these boats and there is so much that we can learn.

[@rockerctereo2851]

You make it so easy to understand and for a non sailing person that's huge. Thank you

[@davec5237]

Great observation 👍

[@Kennardy]

Excellent discovery and very well explained. The race has been exciting through Day 5. Thank you.

[@WhatAboutTheBee]

I knew there was a reason to watch your channel! Stellar observation!

[@forumboss2620]

Thanks. I think this may be your most insightful (and revealing) video to date!

[@chrisw5483]

Bro awesome channel and your channel is the first I go looking for as soon as a race has finished. I’m a kiwi living in Auckland but your channel is far more informative. Just going to say a few episodes back I predicted 7-3 to ETNZ 🤞👍🇳🇿

[@DavidRHill23]

Thank you so much for sharing your insights. You videos are incredible and have given me a far better understanding of just how complex and hard to drive these amazing boats are. Much appreciated.

[@grantrobertson4722]

Loving these insights - thankyou for your good work.

[@BlueJazzBoyNZ]

Clear crisp and concise Thanks M-S

[@deansawich6250]

Thanks. Wonderful info to help understand these fantastic boats and how they are sailed.

[@petermartin9494]

Awesome, wonderful explanation.

[@williamware9443]

Great stuff. Thx!

[@BruceHoult]

More great analysis, thanks! I'm still reeling from seeing Luna Rossa 2 km and 4 minutes ahead tell themselves "At least 28 knots before turning" and then going into the move at 27.5 rather than spending a few seconds and a few meters VMG building speed to their own stated minimum. ETNZ, once they got foiling again, were super disciplined in doing whatever it took to get 30 knots before turns even when it meant 0 VMG for a few seconds before the turn and again building back to 24 knots after the turn. The biggest risk ETNZ seemed to take was dropping to 22 knots pinching up to get around the mark while passing the floundering Luna Rossa.

[@AntonioPiccolboni]

Yeah and I think it's Bruni saying that with his trademark "ragazzi" (boys) at the end and Spithill, always the risk taker, calling the turn.

[@murraybirdsall5048]

Hey Mozz Great series of videos on the boats and skippers! Can’t wait for the higher wind speed racing tomorrow (10-15 knots predicted) to see these boats in a bit more wind! I have heard at least 1 tv commentator down here in NZ give you a plug! Thanks from downunder!

[@zebtownsend3714]

Amazing stuff!!!!

[@victorpassini]

Well done, spot on. Didn’t see this in the live coverage. Congratulations

[@oli-1]

Hi Mozzy, thanks for all the great insights into the series. You made it make a lot more sense, I never knew just how subtle and complex these machines are - but I do now. Cheers, Oly.

[@zaphodify]

Awesome job Moz. Thanks!

[@charlottescott7150]

Really good insight and I love the way you put the footage together so the difference is really easy to see. Thank you

[@michaeleno311]

None of the ‘experts’ in NZ picked this up! Fantastic insightful analysis!

[@MadridBarcelonaRota]

Come on Michael, "none". of the experts in NZ picked up on this! You must be excepting of course the ETNZ team experts in NZ who developed this. Global statements seldom reflect reality.

[@michaeleno311]

I was talking about expert commentators.

[@javanjavan725]

Cool story bro

[@Nick_Jones]

@@michaeleno311 the ‘expert’ commentators aren’t necessarily going to notice this live in real time, especially when their job is to provide commentary, not deep dive analysis. Their minds are focused on other things

[@jordanclark8508]

Maybe experts in NZ don't want to be killed by the KGB. LMAO

[@dwnorris]

Brilliant analysis and explanation!

[@johnstephen2869]

Thanks Mozzy. That’s the best summing-up we’ve seen on the media. Loving it.

[@neilsenior7957]

great info thanks for helping us to understand. Very very helpful

[@jasongriffin5103]

Thanks for your continued analysis sure is informative you are a legend !

[@aardvarkmindshank]

Amazing video. Very interesting and well spotted! How is it the main commentators don't spot things like this? They are supposed to have all the necessary experience but just chat about the same old things with little insight.

[@garyconway7493]

Really enjoying the commentary and technical dives here Mozzy. Brilliant sleuth work

[@waddy707]

Really enjoyed your content, perfect supplementary insights into the teams boat packages, on the Americas Cup, was compulsory viewing

[@johnmartin7158]

Hi Mozzy Sails ! I think someone predicted 7-3 to the Kiwis 🥝 on your channel. I can’t remember who it was. Have thoroughly enjoyed this channel and I certainly hope you guys do it again. You guys are a pleasure and on behalf of all Kiwis, I take time out of my day to say a big THANK YOU to the 3 of you. Auckland. NZ. Regards John.

[@dampchimp]

Great analysis. Thank you. Soo want to get back into sailing now!

[@RoyalMail40]

Great stuff. This is another reason I love sailing. It's so complex and you can get so nerdy. Yeah!

[@sailingev]

I've really enjoyed watching your videos during this cup dude, great insights into the finer details. 👍

[@Nobilangelo]

Videos like this deserve ten thumbs-up. 👍👍👍👍👍👍👍👍👍👍

[@mauriciobrito69]

Brilliant. Thanks for sharing this analysis. I think everyone was trying to figure out what happened in that turn at the bottom of course... question solved! Cheers

[@cjprimata]

Hoo you got the Jumper.

[@BK0090]

you have consistently provided the most insightful analysis on the ways the teams are taking advantage of the tools at their disposal. THANK YOU!

[@Achrononmaster]

Hell yeah. A physicist who knows squat about sailing watching this can totally appreciate it (that's me), it's juicy physics. Plus, if you know any sport, that high degree cant and massive heel seemed risky AF, but the sort of thing high performance sport rewards if you execute it perfectly. I think you called it well, possibly an AC winning moment.

[@troytipene8588]

Great insight thanks

[@bigmoe-specialtylandservic6106]

Fantastic stuff, mate!!!!! PLEASE keep it up!!

[@jordanclark8508]

Our kiwi boys are new skool they've watched Fast and Furious Tokyo Drift. 🤣

[@bremCZ]

Turangi Drift

[@liberateyourslack]

Tokoroakyo Drift!

[@briancavanagh7048]

Geek out of the highest order!

[@jvanroyen]

Thank you for putting your geek on like this. Makes the races so much more fun to watch. Played around with this Virtual Eye app a bit. Also noticed that ETNZ is running at a lower and mostly much more stable pitch. Would this help them in running the boat so fast?

[@IDreadDawn]

Amazing thing to notice, great video

[@rainman3269]

The best analysis on KZbin ... Respect Brother ... 😎

[@markrickel1632]

Good analysis!!!

[@mastrake]

Great stuff!

[@diligentmindz]

Excellent analysis! Well spotted!

[@cnphause]

Great insights. Also - Love the "Topper" cup on the desk. Topper was my first boat as a kid. Indestructible and loads of fun.

[@WarrickAlldridge]

Great analysis !

[@mikey59email]

Love your stuff, mate

[@tonyellison6871]

Thanks for the geek insight. So well spotted and so well explained.

[@cloudsculptor1]

Great insight Ace observation, completely missed this .

[@nine8three310]

Such a brilliant insight. I did notice the JK move yesterday which was massively impressive.

[@TheoSmith249]

excellent observation

[@chrispedersen6999]

Let's give credit where credit is deserved. AMAZING, seat of your pants racing. ETNZ, WELL DONE. Thanks Mozzy 👍. Great video 👍

[@Tony_NZ]

Nice one, Mozzy. Good to get an insight into what happened.

[@joeypierantonis7576]

Again, You da man....

[@williamgraymuir6678]

thanks Mozzy - hate that its all coming to an end all too soon!

[@stevesangster626]

Awesome technical analysis as always, love your channel! Would just like to say, Kiwis have been at the forefront of different (odd) things, like the Bob Semple tank. We do things differently and look outside the norm, and make good with what we have available. The old number 8 wire thing, "You can't do that, it is impossible." Kiwis answer, "why not?" So, is the new manoeuvre now called a BK?

[@damageincorporated8558]

Saw them practicing it on one of sail chasers videos, thought it was going to be the new normal then they didnt do it till now,cool👍

[@nickleach3570]

Great video, ETNZ are bringing out their tricks now, there will be more to come.

[@realnohat]

I noticed the heal at the time and thought about you as you had mentioned something about that enabling a quicker faster turn in an earlier video. Didn't notice the one-legged maneuver though. Nice vid.

[@alexkitchen7282]

There was so much talk about luna rossas slick moves I think a lot of people overlooked ETNZ. If only they nailed the starts. They always seem to slingshot around the bottom mark and make a big gain. Lots of inventiveness!!

[@pj5777]

great analysis......keep the geek outs going

[@mrwattsclass107]

It does matter 😊. Keep your incitful videos coming, Mozzy. 👍🏻

[@gnrsgl]

Nice one I can tell you the breeze is starting to build here in Maraetai as of 2.55pm

[@keithdubose2150]

Sweet ...very much enjoy your observations If the teams are not watching your analysis they are missing out

[@warrencox9123]

Terrific analysis! Enjoyed that as you've explained it in a way that a complete sailing noob can understand.

[@malloott]

yeah you are right, this might be a winning move going forward

[@daves1412]

Brilliant - thanks. TNZ are getting better aren’t they?

[@william69ification]

Really appreciate your analysis and the amount of work required to give us a very clear understanding of this clever move. Your broadcasts have added so much important detail to this cup. Brilliant. I predicted 7-2 to the Kiwis. I will settle for 7-3.

[@illuminandy2509]

the noise they made going thru that turn on the main feed was amazing

[@6Ginge]

I hope these boats are around in the future. Seems like there is some serious development still to be achieved.

[@jamesaron1967]

I think they've only scratched the surface of these boats' potential.

[@onehanger]

Didn't NZ do a no cross track at some point, was watching way past midnight so probably dreaming... On the hill this afternoon! Nice work Mozzy, should be asking for a job in the next cup - real post race analysis. 😉

[@billhanna8838]

Man doing that in race heat is sharp real sharp .

[@MrVaticanRag]

Can we now have an extra couple (or 3) of friendly races this weekend before they mothball the boats? Hopefully on "C" in stronger winds?🥝🥝🙏

[@jeremyharfordtapp]

@mozzy sails - thanks for the interesting videos, have been watching religiously and appreciate the research. I was wondering whether the heel you identify, (even after discounting the additional cant), lets them bury that large extended white fairing section on their foil vertical? If so, this might be giving them considerable extra lateral resistance to help them hold the turn with only the one foil in?

[@angelpen8463]

Need you at the press conferences! 👍🙏