One of the six island, Georgina Island is accessible by ferry. the season isn't open yet.
at the last minute while driving by, I saw the ferry and had to turn in my seat to snap this picture. not quite clear though.
here is an extract from Wikipedia:
"Hike Metal of Nova Scotia built the ferryboat for Georgina Island First Nation in 1999. In September of 1999, the vessel was sailed from Nova Scotia, through the Trent Severn Waterway, and into Lake Simcoe, where it finally found its home on Georgina Island".
In my time as a sailor I`ve this done several times for a survice of the ship.