The Owen Sound Transportation Company, Limited was the forerunner of the enterprise that currently operates the vehicle and passenger ferry - M.S. Chi-Cheemaun - between Tobermory on the Bruce Peninsula, and South Baymouth on Manitoulin Island. For updated information, see the article on the M.S. Chi-Cheemaun.

MS Chi-Cheemaun is a Canadian passenger and vehicle ferry in Ontario, Canada, which traverses Lake Huron between Tobermory on the Bruce Peninsula and South Baymouth on Manitoulin Island. The ferry connects the two geographically separate portions of Highway 6 and is the vessel that replaced MS Norgoma and SS Norisle in 1974. The ferry service runs seasonally from mid-May to mid-October. As of 2022 she is the third largest passenger vessel sailing the Great Lakes after the expedition cruise liner Viking Octantis and the US ferry SS Badger, although several larger vessels previously serving the Great Lakes are still in service in other parts of the world.