include the replacement of her original armament with four Modèle 1864 or Modèle 1864-66 rifled breech-loading guns. Other alterations included reworking her hull sides with teak backing the armor, a larger rudder and, probably, removal of the rings around the propellers. The French measured her freeboard at although it is uncertain if this was before or after these modifications. Onondaga began her sea trials in May 1869 and was subsequently placed in reserve. The ship was mobilized on 17 July 1870 during the Franco-Prussian War, but saw no combat and returned to reserve afterwards. Her armament was augmented in 1878 by six Hotchkiss 5-barreled revolving cannon, two towed Harvey torpedoes and a torpedo launch. In April 1898 she became the guard ship of the Naval Reserve () at Saint-Malo and her light guns were replaced by a dozen Hotchkiss guns, half-a-dozen each of and calibers. Onondaga was stricken on 2 December 1904 and was subsequently sold for 127,550 francs. The ship was scrapped in Brest in 1905. Notes References Ironclad warships of the Union Navy Ships built in Brooklyn Monitors of the United States Navy Steamships of the United States Navy American Civil War patrol vessels of the United States New York (state) in the American Civil War 1863 ships Monitors of the French Navy Ironclad warships of the French Navy