USS Cairo (pronounced Care-o) was named for Cairo, IL and commissioned on January 16,1862. On December 12,1862 in the Yazoo River north of Vicksburg. Cairo was struck by two underwater torpedoes(mines) sinking in less than 12 minutes with no loss of life.
Union ironclad commander Thomas O Selfridge, Jr.
Preserved by mud and silt, Cairo sat on the bottom of the Yazoo River for 102 years. It was raised in 1964 and later restored. This ironclad is the last remaining of its kind.