INEOS have something no other team has: 3D Jib Trimmer 

I have cup fever bad! Can't wait for it to start. 😁

Agreed the endless series of sailor interviews on the official channel are dull. This really gets you interested in what the teams are doing.

Thanks Matthew!

Thanks Richard!

Great to hear!

Thanks for the endorsement!

It's a pleasure!

I had a similar thought. There's little or no incentive to implement a fully simplified solution at this early stage; better to put something on the boat which can provide the maximum of active 3D clew control in real time. They would use that to evaluate, not just the limits of the window, but the degree of advantage conferred, and the motion control parameters (how fast, how much force etc). It would pay them to optimise the "packaging" (and any necessary structural mods, such as a trench for aero) as late in the buildup as possible to keep the competition from copying the optimised version. If anything, an unappetising early implementation could reduce the chances of other teams following suit. I think the third hydraulic hose can be for cranking in the sheet as Mozzy speculates: it could be a single acting, spring return ram within the moving car housing, so that only a single hose was required. Rationale: there is never a situation where you need to "push" on a jib sheet in a self tacking installation. Possibly the sheet ram could have an oval piston and cylinder to minimise the depth for aero reasons. Could use three or four springs side by side to return the piston.

Haha! Not sure I can stretch to that!

If you want to hear funny commentating look no further than Radio Hauraki (NZ) ... cracks me up ACC Alternative Commentary Collective

Sound reasoning, I reckon.

If you understand the the stretch characteristics of the lines you can read time, distance, and power requirements probably easier than hydro.

In the past, I would have agreed with that. But I think the accuracies and nuance of the situation here could be better served with hydraulics. It's going to use hydraulics anyway for the actuators. Better control than a winch drum.

Makes sense wanting to take off without having to bare away as much.

Thanks Alexander!

probably because you need parallel tracks ;)

maybe the curvature gets created through software by moving the hydraulics in the box relative to moving the traveller in parallel.

@@flyinggorilla, possibly seens like a lot of unnecessary stiff, a curved track would be my approach.

@@peterwor Given that the straight tracks are an indispensable element of their parallel motion linkage, (straight tracks mean the forrard and aft control lines move the exact same amount as the car traverses port to stbd) your suggestion would not actually allow them to "do what they're doing". Flying gorilla's suggestion can indeed be implemented *entirely* in software, given that they already need to sense the fore and aft position of the sheet lead, so it's hardly "unnecessary stuff".

Roomba description contains a (nice?) subtle bit of burn, perhaps a sponsorship opportunity (cough, cough Dyson). America's Cup success is dependent on innovation as much as the skill of the sailing teams, so yes trying stuff before the regatta is vital, even if to disprove the validity of changes implemented.

@@leuvenisaplace Dyson's pockets are pretty deep, and they're british, would be a good tieup.

yes, someone else point this out too. I checked the rules and this is allowed so long as both chamber then have pressure release valves

Yes, good point. Rules allow recovery of oil, with the only additional stipulation that each chamber then have a pressure release valve.

Thanks James!

That's a good point. There's some good footage of them doing this in the recon highlights. I should jave mentioned that!

It does look very robotic when it moves!

Nice but seems a lot like overkill. As if he's wishing he'd get contacted. He should actually come up with NEW and UNKNOWN solutions to issues that MAY occur if thats what he wants.

Ues, in previous cups ETNZ did this a lot. The only downside is that it creates a gap between tack and deck, so end plating isn't as good. But I think that covers a lot of what is needed in terms of sheeting angle changes

@@MozzySails that is true with one design sails where area is measured . In Am Cup one can have a crumple foot with Cunningham to achieve end plating even when eased . But you are still correct about ability to sheet to windward and the possible tactical advantages well done

Upwind tha is certainly the case. Downwind and getting up on to the foil more is better. The 3D sheeting allows more extreme sail shapes like what can be achieved with the main. Without a spinnaker getting good power out of the jib to get foiling and downwind is important

Yes, I think that's the same conclusion I came to. It's a lot of hardware to create the desired affect