ClipArt ETC
"Removing sunken schooners from Core Sound, N. C., placed to obstruct the passage of the Federal gunboats, under the superintendence of Captain Hayden, of the New York Submarine Engineering Company. The perverse ingenuity which the Confederates showed in obstructing the channels which led to their strongholds was only exceeded by the persistent ingenuity with which the Federal officers removed them. The Confederates obstructed the channel of Core Sound by sinking schooners; but under the superintendence of Captain Hayden, of the New York Submarine Engineering Company, they were removed by blasting. The shock was perceptibly felt a considerable distance, and it was some time before the water resumed its usual appearance." —Leslie, 1896

Schooners

"Removing sunken schooners from Core Sound, N. C., placed to obstruct the passage of the Federal gunboats,…