The SS Eastland was a passenger ship based in Chicago and used for tours. On 24 July 1915, the ship rolled over onto its side while tied to a dock in the Chicago River. A total of 844 passengers and crew were killed in what was the largest loss of life from a single shipwreck on the Great Lakes.After the disaster, Eastland was salvaged and sold to the United States Navy. After restorations and modifications, Eastland was designated a gunboat and renamed USS Wilmette. She was used primarily as a training vessel on the Great Lakes, and was scrapped after World War II.