19 November [1861] Chief Surgeon Algernon S. Garnett detailed to serve as surgeon of the Merrimack

A History of Ironclads: The Power of Iron Over Wood, By John V. Quarstein, p. 83

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Garnett, Algernon S., Dr., Assistant Surgeon[T2][T1]
Born Oct. 15,1834 to Henry Thomas Garnett and Eliza Stuart Bankhead, of Virginia. As a USN Asst. Surgeon, served on Wyandotte off Florida April 20, 1861. Submitted his resignation, but was dismissed from the USN May 10, 1861. Served on the CSS St. Nicholas on June 29, 1861. Appointed Surgeon August 1862. Lived in Arkansans, dying in Hot Springs, AR, in either 1913 or 1919.
http://cssvirginia.org/vacsn3/crew/virginia/crewlist.htm#Garnett

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"During the 8th and 9th of March, 1862, the Confederate fleet successfully encountered and defied a force equal to 2,896 men and 230 guns, as follows:

"Following are the vessels which composed the Confederate fleet:

"Steamers, Virginia (12 guns), Captain Buchanan; Patrick Henry (12 guns), Commander John R. Tucker; Jamestown (2 guns), Lieutenant-Commander I. W. Barry; gunboats Teaser (1 gun), Lieutenant Commander W. A. Webb; Beaufort (1 gun), Lieutenant-Commander W. H. Parker; Raleigh (1 gun), Lieutenant-Commander I. W. Alexander.

"When the Virginia steamed over from Norfolk to engage the Federal fleet, her officers were:

Flag officer, Franklin Buchanan; executive, Lieutenant Catesby A. R. Jones; lieutenants, Charles C. Simms, R. D. Minor, Hunter Davidson, J. Taylor Wood, J. R. Eggleston and Walter Butt; midshipmen, Fonte, Marmaduke, Littlepage, Craig, Long and Roote; paymaster, James Semple; surgeon, Dinwiddie B. Phillips; assistant surgeon, Algernon S. Garnett; captain of marines, Reuben Thom; engineers, H. A. Ramsey; acting chief, Tynan, Campbell, Hening, Jack, and White; boatswain, Hasker; gunner, Oliver; carpenter, Lindsey; clerk, Arthur Sinclair, Jr.; volunteer aid, Lieutenant Douglas F. Forrest; Confederate States army, Captain Kevill, commanding detachment of Norfolk United Artillery; signal corps, Sergeant Tabb."
http://cssvirginia.org/vacsn4/original/cw04shsp.htm