This site has the story of Mary and Blair Buchanan's adventure from their home (Eastern Lake Ontario) in Canada to the Bahamas and back on 'Stathspey' T3500 #111, with lots of clear detail on the route as well as the systems on the boat and what went wrong, what went right.
This is the default site (and by far the largest) for Tartan Owners (all models) since the NE is the area where most Tartans are. They charge money to be a member, but most information is visible to the casual browser. On their 'models' page they list a number of articles for or about the T3500.
All models, but a great selection of very good (useful) articles on the T3500 at this link to their blog.
A forum for all models, but you can search for 3500.
The specifications are incorrect, the article generic.
A well-researched accurate review
An older T3500 but the only one I know of for charter. Good pictures of the boat which seems to book up early for the summer.