History
United States
Ordered	as Annie Dees
Acquired	9 December 1863
In service	1864
Out of service	1865
Captured	by Union Navy forces on 20 November 1862
Fate	Sold, 8 August 1865
General characteristics
Propulsion	sloop sail

USS Thunder was a blockade running steamer captured by the Union Navy during the American Civil War.

Thunder was purchased by the Union Navy at the prize court and outfitted her as a ship's tender used to support Union ships in the South Atlantic blockade of the Confederate States of America. Blockade runner, Annie Dees, was captured by Union screw gunboat USS Seneca off Charleston, South Carolina, on 20 November 1862 and was purchased by the Navy from the New York City Prize Court on 9 December 1863. Renamed Thunder, the sloop joined the South Atlantic Blockading Squadron for use as a ship’s tender. During October 1864, she operated off Wassaw Sound, Georgia, and returned to Port Royal, South Carolina, in November for repairs. Thunder serviced blockade vessels off the Savannah River, Georgia, in January and February 1865 and spent most of the remaining months of the war on duty off Tybee Island, South Carolina. Thunder was sold at Port Royal on 8 August 1865 to John Smith.

• Blockade runners of the American Civil War
• Blockade mail of the Confederacy

 This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.