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History
NameIvy
NamesakeV.H. Ivy
OwnerConfederate States Navy
BuilderBurtis
Launched1845
CommissionedMay 16, 1861
FateDestroyed to prevent capture at Liverpool Landing, Yazoo River, May 1863
General characteristics
Length191 ft (58 m)
Beam28 ft (8.5 m)
Draft9 ft (2.7 m)
PropulsionSide paddle wheels, one vertical condensing beam engine; cylinders, 44” diameter, 11’ stroke[1]
Speed12 knots (22 km/h; 14 mph)
Complement60 officers and men
Armament1 8”-smoothbore, 1 32-pounder rifle[2]: 229 

CSS Ivy was a sidewheel steamer and privateer purchased by Commodore Lawrence Rousseau for service with the Confederate States Navy, and chosen by Commodore George Hollins for his Mosquito Fleet. The Mosquito Fleet was a group of riverboats converted to gunboats, and used to defend the Mississippi River in the area of New Orleans during the American Civil War.

As a privately owned commercial vessel, the Ivy had been known as the Roger Williams and the El-Paraguay. The CSS Ivy began her Civil War career as a New Orleans-based privateer V.H. Ivy, sent out to capture Union commercial vessels after Jefferson Davis authorized the distribution of letters of marque and reprisal to private citizens after hostilities began in April 1861. The Ivy did well at this, capturing four northern registered vessels, one of which was the ice breaker Enoch Train, which was purchased by private investors and rebuilt as the privateer ironclad ram Manassas. This vessel in turn was commandeered by Commodore Hollins as the CSS Manassas.[3]: 37 

The Union Blockade arrived at the mouth of the Mississippi on May 27, 1861, when the USS Brooklyn took up position. This event energized defense efforts in New Orleans and led to the replacement of Rousseau with Commodore Hollins in July 1861 to command the river defense. By August Hollins had established his mosquito fleet for defense of the river in the area of New Orleans. The fleet consisted of the CSS McRae, the flagship CSS Tuscarora, CSS Livingston, CSS Calhoun, CSS Jackson, and the Ivy.[4]

6.4 inch banded rifle, the weapon type used as the bow pivot gun on the CSS Ivy. Note the 100-pound conical projectile at the right rear of the gun carriage. This image is from the Library of Congress.

The Ivy, due to her large, sophisticated walking beam engine and multiple boiler propulsion system, was the fastest ship of the fleet. Because of this, Hollins made her the reconnaissance vessel of the fleet, and increased her firepower. As a privateer the Ivy was armed with two brass 24-pounder smoothbore howitzers. Hollins increased her armament to an eight-inch smoothbore mounted aft, and a 32-pounder rifled gun mounted on a forward pivot position on the bow. The conventional description of "rifled 32-pounder" is misleading, however. This gun was a former 32-pounder smoothbore that had been "modernized" by rifling the barrel, and machining and shrinking a single layer of red hot bands of wrought iron onto the breech of the barrel to allow it to operate at much greater breech pressures. This rifling and banding allowed the gun to fire a 100-pound (6.4 inch diameter) conical shot or shell at much greater ranges than would be possible with 32-pound round shot fired out of a smoothbore barrel. This modification was similar to the James rifle process used to produce siege guns, and the resulting gun tube resembled a Parrott rifle. This gun could be much more accurately described as a 6.4-inch (162 mm) banded rifle, and was the most powerful, long range weapon in the mosquito fleet.[5]: 14 [6]: 22 

Map of Louisiana during the Civil War. The CSS Ivy was based in New Orleans and helped defend the lower Mississippi.[7]

The Ivy began patrolling the Mississippi south of Forts Jackson and St. Phillip beginning in September 1861, captained by Lieutenant Fry of the CSN. On September 19, she encountered the USS Water Witch (1851). The Water Witch was scouting the Head of Passes for the blockade fleet, which was planning to occupy the Head of Passes and set up a shore battery to control this strategic point. On October 5 Ivy reported the Head of Passes occupied by three vessels of the Union fleet, and shelled them with her bow pivot gun. Returning to the forts, Fry warned Hollins the Union fleet was establishing a base at the Head of Passes. Hollins decided the advance of the Blockade Fleet was a significant threat to New Orleans and moved to attack with the entire mosquito fleet. This attack resulted in the Battle of the Head of Passes a Confederate victory that routed the Blockade Fleet and sent it back to the mouth of the Southwest Passage.[8]

This victory reinforced the idea in the Confederate War Department that Flag Officer Foote's Union Mississippi River Squadron at the north end of the Mississippi was the greatest threat to the Confederacy. The Battle of Fort Henry, the Battle of Fort Donelson, and the Battle of Shiloh lent a lot of credibility to this idea. As a result, the mosquito fleet and the Ivy were ordered to the upper Mississippi and took part in the Battle of Island Number 10.[9]

Porter's Yazoo River expedition against the last Confederate Naval base in western waters at Yazoo City. This image is from the Library of Congress.

Island Number 10 was a defeat for the Confederate forces involved. The mosquito fleet could not match the USS Pittsburgh and Carondelet after these ships successfully ran the Confederate batteries, and were forced to retreat. Commander McBlair CSN at Memphis, being informed that New Orleans had fallen after the Battle of Forts Jackson and St. Philip, ordered remaining Confederate vessels on the Mississippi to concentrate at Yazoo City, Mississippi, on the Yazoo River. He regarded this harbor as the only safe place remaining on the Mississippi River network for the Confederate Navy to maintain a base.[10]

This remaining refuge did not prove safe for long. In May 1863, Rear Admiral David Dixon Porter ordered a fleet under the command of Lieutenant-commander Walker to destroy Confederate commerce on the Yazoo River. This force consisted of the USS Baron De Kalb, Forest Rose, Linden, Signal and Petrel. With the Forest Rose acting as a mine sweeper, this force advanced steadily up the Yazoo river, from May 24–31. Fearing the capture of their vessels on the Yazoo, Confederate forces destroyed the CSS Ivy, Star of the West, and the transports Arcadia and Magenta.[11]

References

Abbreviations used in these notes
Official atlas: Atlas to accompany the official records of the Union and Confederate armies.
ORA (Official records, armies): War of the Rebellion: a compilation of the official records of the Union and Confederate Armies.
ORN (Official records, navies): Official records of the Union and Confederate Navies in the War of the Rebellion.
  1. ^ ORN II, v. 1, p. 256.
  2. ^ Silverstone, Paul H. (1989). Warships of the Civil War Navies. Naval Institute Press, Annapolis, Maryland. ISBN 0-87021-783-6.
  3. ^ Hearn, Chester G. (1995). The Capture of New Orleans 1862. Louisiana State University Press. ISBN 0-8071-1945-8.
  4. ^ Hearn, pp. 70-1.
  5. ^ Lindsay (1989). Mechanics Notebook 23, 1880 Ordnance, Ordnance Construction, Gun Carriages, Machine Guns & Manufacture of Ordnance. Lindsay Publications Inc.
  6. ^ Konstam, Angus (2001). Confederate Ironclad 1861-65. Osprey Publishing Ltd. ISBN 978-1-84176-307-1.
  7. ^ ORN I, v. 18, p. 131.
  8. ^ Hearn, pp. 82-3.
  9. ^ Hearn, p. 169.
  10. ^ ORN II, v. 1, p. 798.
  11. ^ ORN I, v. 25, pp. 133-4.

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