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and our hearts go out to family and members of the racing team from the "artemis." >> reporter: it wasn't the first mishap involving one of these yachts. last fall team "oracle" from the united states capsized its $8 million boat in a nearby part of the bay. but no one was seriously injured in the accident. the team had another close call in 2011 when a smaller catamaran pitch-pulled, sending sailors flying through the air. these boats are all harnessing new technology allowing them to travel faster than ever before. it's not immediately clear what caused the "artemis" boat to capsize, but with one of the sports star sailors dead and other high-profile incidents, the debate is growing whether these boats, engineering marvels they may be, are too dangerous for competition. dan simon, cnn, san francisco. >> and our thanks to dan for that story. ahead on "starting point," boston police claiming the fbi