This model is the famous "DAVID". CSS David was built as a private venture by T. Stoney at Charleston, South Carolina in 1863, and put under the control of the Confederate States Navy. The cigar-shaped boat carried a 60- or 70-pound explosive charge on the end of a spar projecting forward from her bow. Designed to operate very low in the water, David resembled in general a submarine; she was, however, strictly a surface vessel. Operating on dark nights, and using anthracite coal which burns without smoke, "David" was nearly as hard to see as a true submarine.