It was a right royal showdown.<br/> <br />The Duke and Duchess of Cambridge held a yachting duel in waters off Auckland..and it appears that Kate rules the waves.<br/> <br />The British Duchess won two races piloting an America's Cup sailing boat, leaving William trailing in her wake.<br/> <br />Back on dry land, Kate could not hide her delight. While, the Duke joked about his lack of sealegs.<br/> <br />UPSOT<br/> <br />It's the fifth day of their tour of New Zealand. The royal couple have taken their baby son George on the trip.<br/> <br />Earlier, Kate and William visited an air force base, sharing parenting tips with serving airmen and women.<br/> <br />(SOUNDBITE) (English) ROYAL NEW ZEALAND AIR FORCE STAFF SARGENT JASON SPENCER SAYING:<br/> <br />"It's good to see he's very well trained. Emily's dummy fell out of her mouth and he had it picked up within two seconds on the floor."<br/> <br />As for George, he won't be making any more appearances during his parents' 19-day tour of New Zealand and Australia, but he continues t