In contrast the AC75 is a new development because it specifically allows flaps on the two T-shaped foils ushering in a new era in foiling Cup boats.

Ac75 knots. The AC75 is expected to reach high speeds on the Waitemata Harbour. What do you need for a day of racing on an AC75 doing 50 knots besides a spare pair of trousers. During a practice match against British challenger INEOS Team UK Peter Burling Team New Zealand skipper lost control of the AC75 Te Rehutai during a gybe.

In a massive understatement Ashby labelled the AC75s closing speeds particularly into the wind pretty impressive and felt the performance levels of the boats had gone beyond where the. This last point is essential as the regattas should be cancelled above 24 knots of wind in 2017. The 23 m 75 ft monohulls featured wing-like sailing hydrofoils mounted under the hull a soft wingsail 1 and no keel.

If we want to understand the challenges. AC75s tend to tip forward during tacking losing speed going from 40 knots to 30 knots even 25 knots if the hull contacts the water and to 18 knots when the hull plunges deeper in water. In the 3d section the length of the mainsail has been increased and the rudder wheels have been added.

Team New Zealand AC75 Te Rehutai Capsizes at 35 knots. Americas Cup AC72 True Vs Apparent Wind Upwind. You might have also observed how tight in the sails were trimmed in the downwind heading.

While a knot here or there may seem of little relevance to competitors in more mainstream sailing competitions the arguments over the Americas Cup race conditions speak to the incredible focus on design optimisation for the AC75 racing yachts. A bear-away is the most high-risk manoeuvre in the AC75. Rather than wings as it was the case in the past three Cups.

This edition of the Americas Cup sees teams racing at speeds of up to 50 knots. On the three views of the line plan the hull is shown in the boats measurement position ie at rest. From 25 to 38 knots downwind.