The sporty princess, who is known for her love of tennis and hockey, is also passing along her love of sailing to the next generation.
"Kate spent a lot of time talking to the children about their experiences on the boats," Claire Ansell, of the children's charity Motiv8, tells PEOPLE.
"Kate told us that she really liked sailing and actually got quite technical about things – talking about tacking and other different things that you can do with a boat," Ansell adds. "The children understood what she meant, and it was really lovely for them. They were all very excited."
Kate is a keen sailor, and she and William used to enjoy the sport in Anglesey, north Wales, when they lived there in the first three years of their married life.
She displayed this prowess on the waves when she beat William in sailing races on the water in Auckland, New Zealand, during their tour of the country in April 2014.
The moment wasn't lost on William, 33, when he met New Zealand team chief executive Grant Dalton in Portsmouth.
"It was ladies first," said William, laughing with Dalton. "That was a great trip. We loved it."
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The mum of two was greeted with monsoon conditions on Sunday during her first official outing since the birth of Princess Charlotte.
Yet she looked casual chic with a tight ponytail, skinny jeans and her favorite pair of taupe Sebago Bala shoes when she visited the headquarters of America's Cup hopefuls Ben Ainslie Racing in Portsmouth, England, alongside husband Prince William.
The new parents left Charlotte, 2 months, and big brother Prince George, 2, at home to witness the first round of the America's Cup World Series at the historic dockyard on England's south coast.
Sadly, the notoriously damp British weather forced the races to be abandoned, but like all good parents William and Kate made sure they didn't return empty-handed.
The royals were gifted wooden replicas of the Royal Navy's two new aircraft carriers, the Queen Elizabeth and Prince of Wales, which have been specially coated in childproof varnish.
"We look forward to testing them in the bath," William said after receiving them from the Royal Marines officer Colonel Mike Tanner, deputy commander of Portsmouth Naval Base. After checking on the progress of the $124 million attempt by the British to win back the America's Cup – which Kate previously visited while seven months pregnant with Charlotte, William and Kate met a number of the families of the crew and management teams.
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"She asked me about how the sailing was and I said it was really good fun," Rowly tells PEOPLE. "She also asked me what presents I had gotten for my birthday, and I told them that I had been to Legoland."
"She was a really nice lady and had a lovely smile. I really enjoyed meeting her," she adds.
The royal couple also paid a visit the 1851 Trust, of which Kate is a patron.
The Trust works to inspire a new generation to discover sailing and the marine industry, particularly those from underprivileged homes.
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