All four AC75s have a central beam running the length of the cockpit.

Ac75 crew positions. An anxious tension hovers over the crews. The AC50s topped the scales at 2440kgs and the IACC class used for the 1992-2007 period topped the scales at a massive 24000kgs 19000kgs of ballast almost 35 times the weight of the similarly dimensioned AC75. For part 1 of the interview click here.

The spectacle of an AC75 at speed in flight is breathtaking but to learn to fly these boats at speeds that have rarely been achieved has meant that teams have had to climb a near vertical learning curve. Designers and sailors have had to find new techniques to get the boats to accelerate and take-off onto the foils. THE AC75 AT A GLANCE.

The 23 m monohulls featured wing-like sailing hydrofoils mounted under the hull a soft wingsail and no keel. We have power meters on our handles and our live heart rate at all times. 75 feet 2286m.

The technology is new as is the concept and even the language that the crew use to. On all the AC75s the crew positions are designed to keep crew low down to improve aerodynamics. The 36th Americas Cup in March 2021 was the latest staging of the Americas Cup yacht race.

As explained in the article a year ago the hull of an AC75 in foiling mode should have zero lift zero heel and almost zero distance between the bottom of the hull and the water surface. The AC75 is a racing yacht used in the 2021 Americas Cup match and planned to be used for the 37th Americas Cup and 38th Americas Cup matches. 1 Helmsman 1 Trimmer 1 Flight Controller 2 Offside Control 6 Grinders 11 Total So more than half the crew just grind all race.

One of those grinders is BritishAustralian Graeme Spence now in his second Americas Cup campaign he sailed with ORACLE TEAM USA in the 35th Americas Cup in Bermuda. In comparison the AC72 catamaran used in the 2013 Americas Cup had a sailing weight without crew of 5500kgs only 1500kgs less than the ballasted AC75. This probably gives structural integrity to handle the mainsheet loads needed to control twist and provides a deck surface to endplate the mainsail.