US Navy
Naval Historical Center: H. L. Hunley, Confederate Submarine
This site provides a short article on the history of the first submarine to engage and sink a warship. Many links to information about its history, preservation and excavation. Includes original US and Confederate Navy documents.
Civil War Home
Home of the American Civil War: Battle of the Ironclads
A description of the first battle of iron-clad ships during the Civil War. Includes great primary source documents from officers involved.
PBS
Pbs Nova: Lincoln's Secret Weapon
A website that tells the story of the Monitor, the first iron-clad ship, and its archeological salvage.
Alabama Humanities Foundation
Encyclopedia of Alabama: Blockade Running in the Civil War
The Confederacy's tactics of blockade runners in the Civil War are explained in this brief report.
Civil War Home
Home of the American Civil War: Civil War Gunboats
Descriptions of specific gunboats used by both the Union and the Confederacy during the Civil War.
Civil War Home
Home of the American Civil War: Remarks Relative to Iron Clad Gunboats
Remarks from Confederate General Beauregard about the feasibility of iron-clad ships for fighting naval blockades.