Afterwards, she was introduced to local artists, James Waterfield and My Dog Sighs, who have been overseeing the mural, which depicts the skyline from Portsmouth to Ryde and includes views of the Isle of Wight and the Solent, Daily Mail reported.
The Duchess, who is almost seven months pregnant, has long been keen on sailing and was with Sir Ben Ainslie when he launched his bid for 2017 America's Cup glory at the Maritime Museum in Greenwich last June.
On that occasion, Kate and Sir Ben were joined by fellow sailing fan, Duran Duran star Simon Le Bon, and were also given a look at the trophy, which was commissioned from jewellers Garrard by Queen Victoria, itself.
Then, in October last year, it was announced that the Duchess had agreed to become patron of the America's Cup bid's associated 1851 Trust, a charity that aims to ensure future British wins by encouraging youngsters into the sport.
In a statement released shortly after the announcement was made, the Duchess spoke of her love of sailing and credited the sport with boosting her confidence and skills.
