Statistics for occurrence #1 of “Roanoke river” in chapter 5.39 of Southern Historical Society Papers, Volume 3.:

... war with the Confederacy, there were 123 torpedoes planted in Charleston harbor and Stono river, which prevented the capture of that city and its conflagration. There were 101 torpedoes planted in Roanoke river , North Carolina, by which, of twelve vessels sent with troops and means to capture Fort Branch, but five returned. One was sunk by the fire from the fort, and the rest by torpedoes. Of the five i...
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