to fit. So we are good for the original rule and we are good for what has changed but anywhere in between, we are six to eight weeks away from making those. Paul Cayard: Luna Rossa and Team New Zealand want to cherry pick out two of the rules which are essentially allowances. The two rules they want to remove aren't requirements, they are allowances to allow the entirety of the fleet - which is not a one design fleet, every boat is a little different -
to
comply with the safety recommendations. If they pull those two out and they leave the other two requirement rules in, that is actually a third set of rudders - and we don't have time to make a third set of rudders. Nathan Outteridge: At the end of the day we have got a lot on trying to get our boat in the water and go sailing. We would be happier to get the boat sailing and make the racecourse without having to worry about all these issues and rule changes. We did in good faith everything we could do to comply. We are trying to get ready to race and we are trying to race and we are ready to comply. Now two teams want to pull two of the 37 things out and where they want us to go, we can't go. It has the effect of eliminating us if the jury decide in their favour. SRM: How would ETNZ and Luna Rossa be able to comply when you can't? Paul Cayard: They have a third permutation which comply with the class rule and the safety recommendation. To comply, you have to shorten the outboard elevator to stay within the beam. So where do you go with that area? You go forward and then the area becomes less efficient. The way to have an efficient and effective given area (like in an aircraft) is span. So when Iain Murray says I want 0.37 area he is assuming a certain efficiency of that area. That's why he required symmetry originally and he said you can go as much as 0.4 outside the beam so you have a nice symmetrical rudder that is an effective rudder - effective use of the 0.32. If you contort your rudder and you don't use the space on the outside you get an asymmetrical rudder. The first thing that happens with asymmetrical is that you put a bending moment on the rudder - because one side is bigger than the other - and that's not really safe. The next thing you do is to start to lower the aspect ratio of the foil, losing efficiency. They could use the rule but they have chosen to say 'oh we can comply and we don't need that, so let's protest that'. You can read into that what you want. SRM: What would be your position if the organisers fall back to the May 8 rule? Paul Cayard: We are ready to go. We don't believe it is great to hear though. It's less area and it's less safe we think. A few days later, on the day that Artemis were scheduled to race Emirates Team New Zealand in the first of their Louis Vuitton Cup matches, Outteridge gave us an update on the team's progress with load testing their second AC72. He said the tests involved a laborious process that included flipping the boat upside down using huge cranes and then hanging huge weights from it in to simulate a range of possible high load scenarios.
July 2013 28
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