On 15 September 1873, IRONSIDES N 43 02.931 W 86 19.155 (wooden propeller passenger/package freight vessel, 220 foot, 1,123 tons, built in 1864, at Cleveland, Ohio) became disabled when she sprang a leak and flooded. The water poured in and put out her fires. She sank about 7 miles off Grand Haven, Michigan, on Lake Michigan. Reports of the number of survivors varied from 17 to 32 and the number lost varied from 18 to 28.

A great write up on the ironsides and the wreck located here.