LR and Ineos were told before the race that the front was coming in and could well result in the race being binned.
Probably not to difficult to fix the hull but as already said it’s the electronics that will need close examination/replacement.

Nd then there’s the question if why the runner wasn’t released…. Schoolboy error.

This is the windiest month, my betting is ineos is being optimised for medium winds.
But they’re well fast downwind and will take a look at their upwind performance in stronger breeze.

You can’t dump the main anyway as the boom is sheeted in hard always.

My hypothesis is that the backstay caught the sail enough to cause the initial heel, the hull came up but the rudder foil held the stern down, boat flew, crashed back down and lost a lot of speed. If you’re doing 40kt in a 20kt wind the apparent wind is shifted so far you don’t need to let the main out far to dump it, but if you lose your forward way that no longer applies, hence the capsize. I don’t know if anyone was in any state to do anything after they crashed back down, but that was the time to ease the main.

All these hypotheses sound feasible! Equally not much in the way of a righting moment either I don’t suppose.

Why would the rudder foil hold the stern down….the foils provide lift

The rudder provides the required force, whether up or down. Could be either.

Similar to the tailplane on a large aircraft – which is almost always a downward force since the aerodynamic centre is always behind the centre of gravity.

Not sure about the AC75s, I’d be surprised if it’s a downforce, since it’d mean more up force neededon the foils and more drag in total. But they’re wired machines with odd forces & moment arms, flying so much faster than the wind so apparent wind is hugely different & changes aren’t obvious in their outcomes.

It’s great!

American Magic will be out for a while, expect to be ready for the semis.

what are the grinders powering? just winches or is it hydraulics too? they change batteries – is this to power the wings or is that just the electronics and cameras and so on?

The way i see it, the batteries lift and lower the main foils. These batteries run a hydraulic system to do this. The sails (all controls, sheets, fine tune on outhaul, vang, halayard tensions etc), flaps, probably rudder and elevator and winches are all powered by another hydraulic system which is powered by the grinders.

#edit# What Matt said

Been reading up on this as I was interested in what they did. From what I can gather the batteries only power the movement of the foils under the water and the grinders pump up the hydraulics for anything above the waterline including the bits that move the foils in and out of the water, anything that moves the sails etc.

https://www.boatinternational.com/yachts/americas-cup/ben-ainslie-americas-cup-grinders-dont-just-wind-handles–32257

When the bow rises, the top of the rig is pushing hard towards the mast – which now is laid back some – so creating an upward movement it seems.

But the wind is still horizontal, so I don’t think the angle of the mast matters.

Go past a point of no return, add in hull lift and foils now at an angle, and that thing will just take off…

Agreed.

Above link from dannybgoode should be: Link

Edit: but note that the article is from the previous event with the catamarans – rules may have changed

Apparently, they are going to chop their other boat up to repair the hull.

The hulls may be slightly different shape but it will be close enough to allow then to get into the water in a reasonable timeframe

America will probably come back and win it now, hmm.
anyone know what happens if prada and ineos finish on a score of 6 to 6 each ?
Who goes straight into final of two Pravda cup ?
Cumulative times or something I guess..

I’ve got an image in my head of them taking a chunk out of one side of the old boat and it ending up like asymmetric wave boards from windsurfing. Carving turns to port and sharp ones to starboard? 🙂

Although I assume they’re going to “cut and shut” a full width section in where the hole is.

It’s not like there’s not precedent for sawing hulls in half and adding/removing/changing stretches of hull. A number of the old IOR boats had this done to them and I’m sure others since.
.

We will see I guess . Frustrating for all . America looked favourite of the three of the boats in those breezes, so would have been a great set of road robins. I need to find a video of how these boats do 30knt plus in 5-10 not winds. I race on a boat that does 5-10 knots in 30 knots of wind, and that feels fast..

however race schedule now taken down from the website.

Well, basically, AM have no chance of winning the round robins, so they are going to have to sail in the semi-finals starting next Friday. Therefore they will be aiming to spend all that time fixing the boat as best they can. I guess the organizers are waiting to confirm that before they release an updated schedule. There will only be two races if AM don’t show up.

what happens if Prada and INEOS finish on a score of 6 to 6 each

Count back, the Italians go through assuming they win the last race…So we need to beat them once more in the next two races to go through without countback.

I race on a boat that does 5-10 knots in 30 knots of wind, and that feels fast.

Been at 20-25knts planning in a couple of different designed boats both about 30ft long, that felt very fast indeed and very very wet, and yet nothing in comparison to these boats.

unfair on Ineos or the Italians

I think that if the US boat gets back in the water and wins, they will have proved themselves as a team, boat builders and sailors.