Continuity mistake: The state names on all the boats in the harbor have obviously been changed. The letters NC are a different size than the city name (New Harbor). This is because the movie was filmed in Maine and all the boats had the have temporary letters placed over the originals.
Continuity mistake: The scene where Garret and Theresa take the boat out for the early morning test sail. The wide shot cutaway as they are sailing out of the harbour has Theresa's left leg bent and laid flat against the boat. The immediate cut back to the two mid shot has Theresa with her left leg bent but lifted off the side of the boat. Pedantic but true.