Statistics for occurrence #1 of “Commander Craven” in chapter 12 of James Barnes, author of David G. Farragut, Naval Actions of 1812, Yank ee Ships and Yankee Sailors, Commodore Bainbridge , The Blockaders, and other naval and historical works, The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 6: The Navy.:

...the difference be seen. The first notice of the torpedo in Civil War annals is when two were found floating down the Potomac on July 7, 1861. They were made of boiler-iron and were intended for Commander Craven 's little flotilla that was protecting Washington. Out in the West, when Foote and his gunboats made their way up the Tennessee they actually steamed past, without touching, some mines that had drif...
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