CSS New Orleans was a floating battery

Floating battery

A floating battery is a kind of armed watercraft, often improvised or experimental, which carries a heavy armament but has few other qualities as a warship.An early appearance was during the Great Siege of Gibraltar....

 fitted out at New Orleans, Louisiana

New Orleans, Louisiana

New Orleans is a major United States port and the largest city and metropolitan area in the state of Louisiana. The New Orleans metropolitan area has a population of 1,235,650 as of 2009, the 46th largest in the USA. The New Orleans – Metairie – Bogalusa combined statistical area has a population...

 in 1861. The craft featured two small boilers with pump connections for repelling boarders by drenching them with scalding water from her hoses. She was deployed under Lt. S. W. Averett, CSN, in the Mississippi River

Mississippi River

The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

 in time to assist joint army-navy operations at Island Number 10. and New Madrid, Missouri

New Madrid, Missouri

New Madrid is a city in New Madrid County, Missouri, 42 miles south by west of Cairo, Illinois, on the Mississippi River. New Madrid was founded in 1788 by American frontiersmen. In 1900, 1,489 people lived in New Madrid, Missouri; in 1910, the population was 1,882. The population was 3,334 at...

, from 12 March to 7 April 1862. On the final day of the Battle of Island Number Ten

Battle of Island Number Ten

The Battle of Island Number Ten was an engagement at the New Madrid or Kentucky Bend on the Mississippi River during the American Civil War, lasting from February 28 to April 8, 1862. The position, an island at the base of a tight double turn in the course of the river, was held by the Confederates...

, the Confederates, sank the New Orleans.