Intentionally sunk in 2003, this 204’ car ferry offers something for every diver. Sitting upright in 82 feet of water with her main deck just over 45’ down, the "Straits" has become Chicago’s premiere dive site.

The Straits of Mackinac was a car and person ferry in the days before they built a bridge across the straits.

http://mackinacproject.tripod.com/

http://www.windycitydiving.net/wrecks.htm