On September 15, 1928, the "Manasoo" foundered near Griffith Island in Georgian Bay. While fighting a heavy storm, she capsized when her cargo of 116 cattle apparently shifted to one side, overbalancing her. The recent addition of increased passenger accommodations on her upper deck is also thought to have contributed to her instability. She sank quickly. The bodies of her cattle are said to have stocked many a winter larder along the shores that year. All five of the survivors drifted for 60 hours in a life raft before being picked up by the CPR's S.S. "Manitoba". A classic car was discovered inside the submerged shipwreck in November 2018.