Jessica Watson was allowed to keep the replica of her boat used for filming after production had completed.
Jessica's boat - Pink Lady - in the real world had sponsorships all over the hull & sails. But the boat in the movie didn't have any of these.
At 59minutes in, young Jess is seen talking to Ben, where she is wearing a T-shirt with a fox on it. This is available at K-mart Australia in 2023, and would not have been available in 2001.
Cliff Curtis (Ben) and Anna Paquin(Julie) both starred in The Piano (1993)