On July 24, 1915, the steamer Eastland overturns in the Chicago River, drowning between 800 and 850 of its passengers who were heading to a picnic. The disaster was caused by serious problems with the boat’s design, which were known but never remedied.
The Eastland was owned by the St. Joseph-Chicago Steamship Company and made money ferrying people from Chicago to picnic sites on the shores of Lake Michigan. When the Eastland was launched in 1903, it was designed to carry 650 passengers, but major construction and retrofitting in 1913 supposedly allowed the boat to carry 2,500 people. That same year, a naval architect presciently told officials that the boat needed work, stating unless structural defects are remedied to prevent listing, there may be a serious accident.
[Please note that while the MMDI focus is normally on events that transpired during the age of sail, this particular event is, literally, close to home for this editor. — Dean Calin.]
Read the full article on History.com. Also, Wikipedia has a comprehensive article on the S.S. Eastland.