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Left: in the last Route du Rhum Baron Edmond du Rothschild was foiling steadily at night at over 40kt while skipper Charles Caudrelier slept soundly; launched in 2017 this is far from the newest Ultim but it is easily the most developed and in long races this still counts for more than ultimate pace. And of course, there is a new blue foiler on the way... A rough Round the Island race in July caught out several multihulls; the crew of the 66ft Coco du Mer were pushing particularly hard (above)... until they weren’t
manages the MOCRA system, and also finds time to generate shadow ORCmh polars and certificates for many of the MOCRA fleet. But it is fair to say that the MOCRA formulae now labour under the weight of trying to properly handicap everything from a very light 26ft Firebird cat to an ocean-capable foiling MOD 70 tri… While ORCmh certificates require measurement, ORCmh-Club certificates can be generated online at the ORC website. ORCmh- Club uses the same VPP with the same certificate style as ORCmh; the only difference is that dimensions and hull offset files need not be verified. ORCmh-Club is available for any event to include in the NOR and the ORC technical staff are ready to support the process. The International Maxi Association (IMA) announced that there would be a multihull class raced under ORCmh for their world cham- pionships in 2023. The implications of involvement in the IMA organ- isation were brought home when the IMA yearbook thudded onto my doormat in February. The IMA trophies are at the highest level of competition and measurement and race management are also outstanding. It is important that the ORCmh standards meet those expected by the IMA technical team. I’m confident that they will. Each boat in the fleet will be 3D-scanned including superstructure. The scan will include the freeboard datum points so that displace- ment is correctly calculated. The rudders and foils are defined by their section shapes along the appendage rondure, and their location in the hull and deployed and retracted positions defined. All sails carried onboard, along with their hoist and tack points, are measured and present on the certificate. The apparent wind angle at which the headsails set flying can be sheeted are checked. The ORCmh polars reflect the optimum sail combination for 14 points of sail and seven wind speeds. Yes it’s complex, but it need not be complicated once the crew are au fait with the process. Just as the editor suggested that offshore racing multihulls might be a suitable topic for the ORC column the internet was filled with tales of sinking and capsized boats during the Round the Island Race. These were boats that had raced for years with experienced crews. The incidents will be analysed, but offshore racing in a big multihull is not without risk. In the recent Gotland Runt race the 80ft Nigel Irens-designed cat Allegra won the multihull class – record- ing a top speed of 33kt… This is not for the faint-hearted. Imagine being in a conservatory on the windward side of the Fastnet Rock and it’s blowing 45kt outside: that’s what the GoPro footage from the saloon looks like. Do not, under any circumstances, open the bi-folds. During last year’s Route du Rhum to Martinique the Ultime trimaran Baron Edmond de Rothschild was foiling steadily at 43kt. The support team in Lorient were debating whether to wake up the singlehanded skipper. The autopilot was doing an OK job... Autopilots are approaching, or surpassing, the competency of a tired and wet human being. Shorthanded races are spawning autopilots of extreme complexity and cost. In the crewed multihull fleets there are anti-overload/capsize systems active in the hydraulic system; is there a way to permit these as a safety system without creating a Trojan horse for a fully-functioning autopilot? How do you get AI to keep you safe, but not let it sail the whole race and wake you at the finish line?
The cats (and tris) are well and truly out of the bag; ORC is pleased to be supporting these boats with handicap rules and Special Regs. Andy Claughton, ITC Chair
SEAHORSE 41
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