January 30, 1862 – The first American ironclad warship, the USS Monitor is launched. USS Monitor was the first ironclad warship commissioned by the United States Navy during the American Civil War. She is most famous for her participation in the Battle of Hampton Roads on 9 March 1862, the first-ever battle fought between two ironclads. The Monitor fought the ironclad CSS Virginia (the former frigate USS Merrimack) of the Confederate States Navy. Monitor’s hull was built at the Continental Iron Works in the Greenpoint section of Brooklyn, New York, and the ship was launched there on 30 January 1862. The innovative vibrating lever, or half-trunk, steam engines, designed by John Ericsson, and machinery were constructed at the DeLamater Iron Works in Manhattan, The boilers and engines were installed dead aft.