A webcam on the Isle of Wight captured this foil tack by the INEOS test boat. This is a highly modified Quant 23 with no keel, a single skin mainsail and an automated foil cant system. In the video, watch for the splash when the port foil is dropped. They go through the tack with both foils down, and quickly raise the starboard foil when the tack is complete.
Now we know – the AC75 will be able to do more than just go fast in a straight line!