Kiwing

Fusion for me.

Except that would make it a 6 knot current?

^ Thanks @Stingray~ Wings are on their own in this environment. I hope we see more of this.

No

If you watch the video you can see them doing it. It seems wrong because the vertical profile of the foil would seem to have force leeward, but I guess the flaps on the foil change that. Watch the video and you will see it happening. I/we are guessing how they do it, and what benefits there might be - but they are doing it with very improved VMG.

Ignoring the water for a moment surely the right diagram gives more RM and power from the sails? The foil is using it's flaps to generate amazing VMG for some drag?

I guess they can "rotate" the boat at will to arrive at the best VMG. It surprises me that they can and while the foils are the only things in the water it still looks radical to me.

Watch one of the videos of NYYC she is pointing away from the camera and climbing radically to windward (starboard) for a long time.

^ Very interesting point. I wish I could add something. Maybe hull contributing to the force forward

Nathan would be good.

I am going to speculate that it is the "Boom and Head of the twin skill" that is the big change?

LR II looks quite different from the bustle to the plimsoll line to ETNZ I.

I'm in where is the bk acct?

Lift to windward?

Open your eyes then. Tin skin sails, foil development for offshore races etc...