Aquarius S21 USS Onondaga  

History
Twin turret monitor
Commissioned March 24, 1864, James River flotilla

Engagement at Trent's Reach, Jun 21, 1964
                   at Dutch Gap, Aug 13, 16-18, 1964
Bombarded Howlett's Battery, Nov 29 and Dec 5-6, 1964

Engaged CSS Virginia II, Richmond and Fredericksburg on Jan 24, 1965 forcing them to retire

Decommissioned June 8, 1965
Sold to France July 12, 1967
Broken up 1903

Sources
Drawings from the National Archives and several photos