There’s a 60-mile stretch of France’s Brittany coast, between La Trinité-sur-Mer and Port la Forêt, where something in the drinking water causes certain individuals with high concentrations of salt water in their veins to want to go to sea, alone, aboard such monstrous and radical craft. Here, too, French corporations and private individuals, apparently drinking from the same fountain, are willing to bankroll the sailors and their Ultime 100 trimarans, which have already proved capable of 850 singlehanded miles in a day. While it seems likely six new maxi-trimarans, known in France as Ultimes, could be on the Brest Oceans start line, there are at least 10 other such large multihulls in existence, designed for singlehanded round-the-world sailing, that, in theory, could compete in the race as well. Because of…