Dunderberg
A Swedish word meaning "thunder(ing) mountain."
Dunderberg, an ironclad screw frigate of 16 guns, was built by W. H. Webb, New York, N.Y., and was launched on 2 March 1865. She was never commissioned, and in 1867, in accordance with the Navy's policy to reduce its number of vessels, was returned to her builder. She was sold by Webb to the French in whose navy she rendered notable service under the name Rochambeau.
