Almost three years in the building, the U.S.S. Dunderburg is finally launched into New York's East River
The ironclad U.S.S. Dunderburg had been laid down in 1862 and took almost three years to complete at William Webb's shipyard in New York City. In a pouring rain the long-delayed 5090-ton vessel was finally launched. She had cost one and a quarter million dollars but never entered U.S. Navy service and Webb was allowed to sell her to France in 1868 where she became the Rochambeau. She only lasted till 1872, when she was scrapped. (By John Osborne)
United States Navy Department, Official Records of the Union and Confederate Navies in the War of the Rebellion Series II, Volume I, Part 1 (Washington, D.C., 1921), 76.