America's Cup 2021 Defense

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#2637180 18-Jan-2021 08:53

Watch the slowmo of the incident. Then compare to hull image. The left foil arm (which is mounted on a complex rotating hydraulic mechanism under extreme stress) is pushed back impacting the water - not in the knife slicing way it was designed

That twist would have transferred a heap of hull stress. Carbon.. pop.

Batman

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#2637182 18-Jan-2021 08:57

Oblivian: Watch the slowmo of the incident. Then compare to hull image. The left foil arm (which is mounted on a complex rotating hydraulic mechanism under extreme stress) is pushed back impacting the water - not in the knife slicing way it was designed

That twist would have transferred a heap of hull stress. Carbon.. pop.

stress -> pop i understand

so not whack rocks -> tear lol

djtOtago

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#2637184 18-Jan-2021 08:59

It would have been the landing back into the water after their short flight. Hitting the water from that height would have been like hitting the hull with a large sledge hammer. The hole was not ripped, but punched.

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#2637187 18-Jan-2021 09:09

It became the fulcrum point, all the load and momentum focussed on a small area

FineWine

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#2637189 18-Jan-2021 09:17

Batman:

told my kids - when you are winning by a comfortable margin, don't do anything stupid

Well said but unfortunately -

I know Dean Barker is a Kiwi but it is rather ironic at this time. I said to my partner as we watched the race live on TV1 that that is a sign of the American times. When you know or think you are winning push harder. In other words Trumpism.

Whilst the difficult we can do immediately, the impossible takes a bit longer. However, miracles you will have to wait for.

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#2637192 18-Jan-2021 09:27

FineWine:

Batman:

told my kids - when you are winning by a comfortable margin, don't do anything stupid

Well said but unfortunately -

I know Dean Barker is a Kiwi but it is rather ironic at this time. I said to my partner as we watched the race live on TV1 that that is a sign of the American times. When you know or think you are winning push harder. In other words Trumpism.

without getting political i politely disagree.

i think it's a sportsperson showboat gene.

the All Blacks would happily showboat when winning by a lot.

I was just trying to teach my kids something.

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PolicyGuy

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#2637193 18-Jan-2021 09:28

Batman:

Handle9: They are screwed. They'll probably be able to get back on the water for the finals but Patriot is busted.

not a sailor but don't understand how you can rip a hole like that by tipping over

They flew into the air and came back down on their port side at about 35 to 40 knots, or about 65 to 75 kph.
See https://www.youtube.com/watch?v=ah5V8RHE1_Y

Smacking into the water on the port bow with the full weight of the boat at 70kph seems to have put enough shock load on the hull to punch a decent sized hole.
I heard on the TV these boats are about 9 tonnes. Correct weight: boat ~6.5t, crew ~950kg, total ~7.5t not 9t

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#2637194 18-Jan-2021 09:30

PolicyGuy:

They flew into the air and came back down on their port side at about 35 to 40 knots, or about 65 to 75 kph.
See https://www.youtube.com/watch?v=ah5V8RHE1_Y

Smacking into the water on the port bow with the full weight of the boat at 70kph seems to have put enough shock load on the hull to punch a decent sized hole.
I heard on the TV these boats are about 9 tonnes.

that's very unfortunate. TNZ did that 3 times apparently without consequence

it was fun to watch a capsize but i would not wish 4 years of sweat and blood going to waste like that.

hopefully they can be back on water by race day

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#2637217 18-Jan-2021 09:54

In an America's Cup report on the American Magic accident:

As the AC75’s are not self-righting, the race against Luna Rossa was over.

The report needs to add... with a hole in the hull letting in water...

https://americanmagic.americascup.com/en/news/82_AMERICAN-MAGIC-S-AC75-SURVIVES-CRASH-DAMAGE-AND-NEAR-SINKING-ON-THE-HAURAKI-GULF.html

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#2637219 18-Jan-2021 09:57

Hi maybe a heavy component inside (battery assembly purhaps) broke loose and hurled through the Hull is my guess.

Cyril

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#2637225 18-Jan-2021 10:17

Consensus seems to be a battery pack dislodged inside, either by sheer force of deceleration or dislodged by loaded foil mechanisms moving in the hull.

Also coverage was bloody awful and continues to be - after the race was declared they cut back to Toni Street in the studio to say how excited she was and then went to the news hour.

On the international stream the boat was righted but visibly too low in the water (and it was remarked that they were in real trouble) but then the official stream ended too!

What a huge broadcasting fail by the organisers and by TVNZ - who had the option of switching to Duke in the event coverage ran over time due to delays; but then again, the organisers ending the official stream dropped the ball as well.

F1 has hour long post-race shows by default and would follow something like a pending steward's decision or exclusion until it was resolved. No such inclination here.

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#2637231 18-Jan-2021 10:39

Seems to be some Carbon fractue lines visible

https://www.nzherald.co.nz/resizer/zsUorsyXfTJJReEi9quGn20KKdE=/576x432/smart/filters:quality(70)/cloudfront-ap-southeast-2.images.arcpublishing.com/nzme/4KG7L7KS2ET5SPOT2LAW4NK2KM.jpg

News had a live camera cut during sport of the efforts. And 2 different sailing nz type facebook pages streaming during the pumping

Yeah, the official channels may have chosen not to draw out the recovery. But there was always other means.

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#2637233 18-Jan-2021 10:41

Disappointingly the best coverage of the post incident struggles that the team and support crew were going through to save the boat was live streamed to Facebook from a private boat in the vicinity.

https://www.facebook.com/livesaildie.official/videos/129774008967086/

On the flip side they did a bloody good job even covering the raising the boat back at dock late into the night.

https://www.facebook.com/livesaildie.official/videos/833516123873832/

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#2637234 18-Jan-2021 10:42

GV27:

Consensus seems to be a battery pack dislodged inside, either by sheer force of deceleration or dislodged by loaded foil mechanisms moving in the hull.

Also coverage was bloody awful and continues to be - after the race was declared they cut back to Toni Street in the studio to say how excited she was and then went to the news hour.

On the international stream the boat was righted but visibly too low in the water (and it was remarked that they were in real trouble) but then the official stream ended too!

What a huge broadcasting fail by the organisers and by TVNZ - who had the option of switching to Duke in the event coverage ran over time due to delays; but then again, the organisers ending the official stream dropped the ball as well.

F1 has hour long post-race shows by default and would follow something like a pending steward's decision or exclusion until it was resolved. No such inclination here.

Agree. yes One News needs to go ahead, but Duke is there for a reason ...

tdgeek

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#2637237 18-Jan-2021 10:45

Batman:

Agree. yes One News needs to go ahead, but Duke is there for a reason ...

So put the 5 hours recovery on Duke?

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